/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --navy: #1a2b4a;
    --navy-light: #2a3f6a;
    --orange: #e8601c;
    --orange-light: #f5a623;
    --orange-dark: #c44d10;
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #f1f3f5;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #868e96;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
    color: var(--navy);
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; }
h3 { font-size: 1.5rem; font-weight: 700; }
h4 { font-size: 1.125rem; font-weight: 600; }

.text-orange { color: var(--orange); }
.text-gradient {
    background: linear-gradient(135deg, var(--orange), var(--orange-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--orange), var(--orange-dark));
    color: var(--white);
    border-color: var(--orange);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(232, 96, 28, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--navy);
    border-color: var(--navy);
}

.btn-outline:hover {
    background: var(--navy);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--white);
    color: var(--orange);
    border-color: var(--white);
    font-weight: 700;
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,255,255,0.3);
}

.btn-full {
    width: 100%;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
    padding: 12px 0;
}

.navbar.scrolled {
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
    padding: 8px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-svg,
.logo-img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: 50px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--orange);
    background: rgba(232, 96, 28, 0.06);
}

.nav-cta {
    background: linear-gradient(135deg, var(--orange), var(--orange-dark)) !important;
    color: var(--white) !important;
    font-weight: 600 !important;
}

.nav-cta:hover {
    box-shadow: 0 4px 15px rgba(232, 96, 28, 0.4);
    background: var(--orange-dark) !important;
}

.nav-login-group {
    position: relative;
}

.nav-login-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--navy);
    color: var(--white);
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
    border: 2px solid var(--navy);
    padding: 8px 18px;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.nav-login-toggle:hover {
    background: var(--navy-light);
    border-color: var(--navy-light);
    box-shadow: 0 4px 15px rgba(26, 43, 74, 0.3);
}

.login-chevron {
    transition: transform 0.3s ease;
}

.nav-login-group.open .login-chevron {
    transform: rotate(180deg);
}

.login-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 250px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    border: 1px solid var(--gray-200);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.25s ease;
    z-index: 1000;
    overflow: hidden;
}

.nav-login-group.open .login-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.login-dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    text-decoration: none;
    color: var(--gray-800);
    transition: var(--transition);
    border-bottom: 1px solid var(--gray-100);
}

.login-dropdown-item:last-child {
    border-bottom: none;
}

.login-dropdown-item:hover {
    background: var(--gray-50);
    color: var(--orange);
}

.login-dropdown-item svg {
    flex-shrink: 0;
    color: var(--orange);
}

.login-dropdown-item strong {
    display: block;
    font-size: 0.88rem;
    color: var(--navy);
    margin-bottom: 2px;
}

.login-dropdown-item:hover strong {
    color: var(--orange);
}

.login-dropdown-item small {
    display: block;
    font-size: 0.72rem;
    color: var(--gray-500);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--navy);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #fafbff 0%, #fff5f0 50%, #f0f7ff 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.06;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--orange);
    top: -200px;
    right: -100px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--navy);
    bottom: -100px;
    left: -100px;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: var(--orange-light);
    top: 40%;
    left: 30%;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(232, 96, 28, 0.1);
    color: var(--orange);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(232, 96, 28, 0.2);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--gray-600);
    margin-top: 20px;
    max-width: 520px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--gray-200);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--navy);
    line-height: 1;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--orange);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-top: 4px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-300);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.bulb-container {
    position: relative;
    width: 350px;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.energy-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(232, 96, 28, 0.15);
}

.ring-1 {
    width: 200px;
    height: 200px;
    animation: pulse-ring 3s ease-in-out infinite;
}

.ring-2 {
    width: 280px;
    height: 280px;
    animation: pulse-ring 3s ease-in-out 1s infinite;
}

.ring-3 {
    width: 350px;
    height: 350px;
    animation: pulse-ring 3s ease-in-out 2s infinite;
}

@keyframes pulse-ring {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.05); }
}

.bulb-icon {
    width: 140px;
    height: 180px;
    z-index: 1;
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--gray-400);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--orange);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(232, 96, 28, 0.08);
    color: var(--orange);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-desc {
    max-width: 650px;
    margin: 16px auto 0;
    color: var(--gray-600);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ===== ABOUT ===== */
.about {
    padding: 100px 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-lead {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--navy);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-content p {
    color: var(--gray-600);
    margin-bottom: 14px;
    line-height: 1.8;
}

.about-badges {
    display: flex;
    gap: 24px;
    margin-top: 24px;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}

.badge-icon {
    width: 24px;
    height: 24px;
    color: var(--orange);
    flex-shrink: 0;
}

.badge-icon svg {
    width: 100%;
    height: 100%;
}

.badge-item span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--navy);
}

/* ===== IMPACT WIDGET STYLES ===== */
.impact-calculator {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: start;
}

.impact-input-area {
    background: var(--white);
    padding: 18px;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.impact-input-row-top,
.impact-input-row-bottom {
    display: flex;
    gap: 16px;
    align-items: center;
}

.impact-field {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.impact-label {
    font-size: 0.85rem;
    color: var(--gray-700);
    font-weight: 600;
}

.impact-value-box {
    display: flex;
    align-items: center;
    gap: 8px;
}

.impact-number-input {
    width: 200px;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--gray-200);
    font-weight: 700;
    font-size: 1rem;
    text-align: right;
}

.impact-unit {
    color: var(--gray-600);
    font-weight: 600;
}

.impact-range {
    width: 100%;
    height: 10px;
    -webkit-appearance: none;
    background: linear-gradient(to right, #22c55e 0%, #e9ecef 0%);
    border-radius: 999px;
}

.impact-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--orange);
    border-radius: 50%;
    box-shadow: 0 6px 18px rgba(232,96,28,0.25);
}

.impact-select {
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--gray-200);
    background: linear-gradient(180deg, var(--white), #fbfbfb);
    font-weight: 700;
}

.impact-results {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.impact-stat-card {
    background: var(--gray-50);
    padding: 18px;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    gap: 12px;
}

.impact-trees-card .impact-stat-icon { font-size: 22px; }

.impact-stat-icon { font-size: 20px; }
.impact-stat-number { font-weight: 800; font-size: 1.6rem; color: var(--navy); }
.impact-stat-label { color: var(--gray-600); font-weight: 600; }

.impact-forest { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.tree-icon { font-size: 20px; display: inline-block; opacity: 0; animation: pop .5s forwards; }
@keyframes pop { to { opacity: 1; transform: translateY(0); } }

.impact-message { margin-top: 12px; color: var(--navy); font-weight: 600; }

.impact-share-btn { margin-top: 14px; }

.impact-note {
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--gray-700);
    background: #fffefc;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #fff3e6;
}
.impact-note p { margin-top: 6px; color: var(--gray-600); font-weight: 500; line-height: 1.5; }

/* Image modal (lightbox) */
.image-modal { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; z-index: 2000; }
.image-modal.open { display: flex; }
.image-modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.6); }
.image-modal-content {
    position: relative;
    width: 70vw;
    height: 70vh;
    max-width: 1000px;
    max-height: 800px;
    z-index: 2001;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}
.image-modal-content img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
}
.image-modal-close {
    position: absolute;
    /* place the close button snug to the image corner */
    top: 6px;
    right: 6px;
    background: var(--white);
    border: 0;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    box-shadow: 0 6px 18px rgba(0,0,0,0.18);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    z-index: 2002;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Vision/Mission Cards */
.about-vision-mission {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.vm-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.vision-card {
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    color: var(--white);
}

.mission-card {
    background: linear-gradient(135deg, var(--orange), var(--orange-dark));
    color: var(--white);
}

.vm-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 16px;
}

.vm-icon svg {
    width: 100%;
    height: 100%;
    stroke: rgba(255,255,255,0.8);
}

.vm-card h3 {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.vm-card p {
    opacity: 0.9;
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Core Values */
.values-section {
    margin-top: 80px;
}

.values-title {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
    color: var(--navy);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.value-card {
    text-align: center;
    padding: 28px 20px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--orange);
}

.value-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--orange);
    background: rgba(232, 96, 28, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.value-icon svg {
    width: 100%;
    height: 100%;
}

.value-card h4 {
    margin-bottom: 10px;
    color: var(--navy);
    font-size: 1rem;
}

.value-card p {
    font-size: 0.82rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===== LEADERSHIP ===== */
.leadership-section {
    margin-top: 60px;
    margin-bottom: 20px;
}

.leadership-grid {
    display: flex;
    justify-content: center;
    gap: 32px;
}

.leader-card {
    text-align: center;
    padding: 36px 40px;
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    max-width: 320px;
}

.leader-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--orange);
}

.leader-image {
    width: 160px;
    height: 160px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--orange);
    box-shadow: 0 4px 20px rgba(232, 96, 28, 0.2);
}

.leader-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.leader-info h4 {
    font-size: 1.2rem;
    color: var(--navy);
    margin-bottom: 6px;
}

.leader-role {
    display: inline-block;
    padding: 4px 16px;
    background: linear-gradient(135deg, var(--orange), var(--orange-dark));
    color: var(--white);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.leader-info p {
    font-size: 0.85rem;
    color: var(--gray-600);
}

/* ===== PROBLEMS SECTION ===== */
.problems {
    padding: 100px 0;
    background: var(--gray-50);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 50px;
}

.problem-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--orange), var(--orange-light));
    opacity: 0;
    transition: var(--transition);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.problem-card:hover::before {
    opacity: 1;
}

.problem-icon {
    width: 60px;
    height: 40px;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--navy);
}

.problem-card p {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* Additional Factors */
.factors-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.factor-card {
    background: var(--white);
    padding: 28px;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.factor-card:hover {
    box-shadow: var(--shadow-md);
}

.factor-icon {
    width: 44px;
    height: 44px;
    color: var(--orange);
    margin-bottom: 16px;
    background: rgba(232, 96, 28, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.factor-icon svg {
    width: 100%;
    height: 100%;
}

.factor-card h4 {
    margin-bottom: 12px;
    color: var(--navy);
}

.factor-card ul {
    list-style: none;
    padding: 0;
}

.factor-card li {
    padding: 4px 0;
    font-size: 0.9rem;
    color: var(--gray-600);
    padding-left: 16px;
    position: relative;
}

.factor-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--orange);
}

/* ===== PRODUCTS ===== */
.products {
    padding: 100px 0;
    background: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.product-card {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.product-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.product-card.featured {
    border-color: var(--orange);
    background: linear-gradient(180deg, rgba(232,96,28,0.03) 0%, var(--gray-50) 100%);
}

.featured-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    background: linear-gradient(135deg, var(--orange), var(--orange-dark));
    color: var(--white);
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

.product-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--navy);
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    margin-left: 24px;
}

.product-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px 20px;
}

.product-img {
    max-width: 240px;
    max-height: 240px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.product-info {
    padding: 20px 32px 32px;
}

.product-info h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--navy);
}

.product-features {
    list-style: none;
    padding: 0;
    margin-bottom: 24px;
}

.product-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 6px 0;
    font-size: 0.9rem;
    color: var(--gray-700);
    line-height: 1.5;
}

.product-features li svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.product-highlights {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.highlight {
    text-align: center;
    flex: 1;
}

.highlight-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--orange);
    line-height: 1;
}

.highlight-label {
    display: block;
    font-size: 0.78rem;
    color: var(--gray-500);
    margin-top: 4px;
    font-weight: 500;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
    padding: 100px 0;
    background: var(--gray-50);
}

.how-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.step {
    position: relative;
    padding: 32px 24px;
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.step:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(232, 96, 28, 0.1);
    line-height: 1;
    margin-bottom: 16px;
}

.step-content h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--navy);
}

.step-content p {
    font-size: 0.88rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* Appliances */
.appliances-section {
    margin-bottom: 80px;
    text-align: center;
}

.appliances-section h3 {
    font-size: 1.2rem;
    color: var(--navy);
    margin-bottom: 32px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.appliances-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.appliance-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.appliance-item:hover {
    border-color: var(--orange);
    box-shadow: var(--shadow-sm);
}

.appliance-item svg {
    width: 28px;
    height: 28px;
    color: var(--orange);
    flex-shrink: 0;
}

.appliance-item span {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--gray-700);
}

/* Why Choose Us */
.why-choose {
    text-align: center;
}

.why-choose h3 {
    font-size: 1.8rem;
    margin-bottom: 40px;
}

.choose-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.choose-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    text-align: left;
}

.choose-item:hover {
    border-color: var(--orange);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.choose-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    color: var(--orange);
    background: rgba(232, 96, 28, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

.choose-icon svg {
    width: 100%;
    height: 100%;
}

.choose-item span {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--navy);
}

/* ===== TESTIMONIALS ===== */
.testimonials {
    padding: 100px 0;
    background: var(--white);
}

.testimonials-slider {
    overflow: hidden;
    margin-bottom: 32px;
    margin-left: -40px;
    margin-right: -40px;
    padding-left: 40px;
    padding-right: 40px;
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 40px, black calc(100% - 40px), transparent 100%);
    mask-image: linear-gradient(to right, transparent 0%, black 40px, black calc(100% - 40px), transparent 100%);
}

.testimonials-track {
    display: flex;
    gap: 24px;
    transition: transform 0.5s ease;
    align-items: stretch;
}

.testimonial-card {
    width: calc((min(1200px, 100vw - 80px) - 48px) / 3);
    min-width: calc((min(1200px, 100vw - 80px) - 48px) / 3);
    max-width: calc((min(1200px, 100vw - 80px) - 48px) / 3);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--gray-200);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.testimonial-stars svg {
    width: 18px;
    height: 18px;
}

.testimonial-text {
    font-size: 0.95rem;
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
    flex: 1;
}

.testimonial-video-btn {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    gap: 5px;
    padding: 4px 12px;
    background: #ff0000;
    color: var(--white);
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    margin-bottom: 16px;
}

.testimonial-video-btn svg {
    width: 14px;
    height: 14px;
}

.testimonial-video-btn:hover {
    background: #cc0000;
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.3);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.testimonial-author strong {
    display: block;
    color: var(--navy);
    font-size: 0.95rem;
}

.testimonial-author span {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.slider-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.slider-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--gray-300);
    background: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--gray-600);
}

.slider-btn:hover {
    border-color: var(--orange);
    color: var(--orange);
    background: rgba(232, 96, 28, 0.05);
}

.slider-btn svg {
    width: 20px;
    height: 20px;
}

.slider-dots {
    display: flex;
    gap: 8px;
}

.slider-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-300);
    cursor: pointer;
    transition: var(--transition);
}

.slider-dots .dot.active {
    background: var(--orange);
    transform: scale(1.2);
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    color: var(--white);
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 20px;
}

.cta-content p {
    color: rgba(255,255,255,0.9);
    max-width: 600px;
    margin: 0 auto 36px;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* ===== CONTACT ===== */
.contact {
    padding: 100px 0;
    background: var(--gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--orange);
}

.contact-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--orange);
    background: rgba(232, 96, 28, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-card h4 {
    color: var(--navy);
    margin-bottom: 4px;
    font-size: 0.9rem;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.6;
}

.contact-card a {
    color: var(--orange);
    font-weight: 500;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--gray-800);
    transition: var(--transition);
    background: var(--gray-50);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--orange);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(232, 96, 28, 0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23868e96' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--navy);
    color: rgba(255,255,255,0.8);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: 12px;
    filter: brightness(0) invert(1);
}

.footer-company {
    font-weight: 700;
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 4px;
}

.footer-tagline {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 0.88rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.6);
}

.footer-links h4,
.footer-contact h4 {
    color: var(--white);
    margin-bottom: 16px;
    font-size: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--orange);
}

.footer-contact p {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
    line-height: 1.6;
}

.footer-contact a {
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-contact a:hover {
    color: var(--orange);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
}

.disclaimer {
    margin-top: 8px;
    font-size: 0.72rem !important;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--orange);
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.back-to-top svg {
    width: 22px;
    height: 22px;
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .bulb-container {
        width: 250px;
        height: 250px;
    }

    .ring-3 {
        width: 250px;
        height: 250px;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .how-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .choose-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonial-card {
        min-width: calc((100vw - 80px - 24px) / 2);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 80px 24px 24px;
        box-shadow: -5px 0 30px rgba(0,0,0,0.1);
        transition: var(--transition);
        gap: 4px;
        z-index: 999;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        display: block;
        padding: 12px 16px;
        font-size: 1rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .problems-grid {
        grid-template-columns: 1fr;
    }

    .factors-row {
        grid-template-columns: 1fr;
    }

    .how-steps {
        grid-template-columns: 1fr;
    }

    .appliances-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .choose-grid {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonial-card {
        min-width: calc(100vw - 80px);
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

    .about-badges {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .hero {
        padding-top: 70px;
    }

    .hero-badge {
        font-size: 0.75rem;
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .appliances-grid {
        grid-template-columns: 1fr;
    }

    .product-highlights {
        flex-direction: column;
        gap: 16px;
    }
}

/* ===== ENVIRONMENTAL IMPACT WIDGET ===== */
.impact-widget {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 40%, #f0f9ff 100%);
    position: relative;
    overflow: hidden;
}

.impact-widget::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.impact-widget .section-tag {
    background: rgba(34, 197, 94, 0.12);
    color: #16a34a;
}

.impact-calculator {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 36px;
}

.impact-input-area {
    width: 100%;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: var(--shadow-md);
}

.impact-label {
    display: block;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.impact-slider-row {
    display: flex;
    align-items: center;
    gap: 20px;
}

.impact-range {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, #22c55e 0%, #22c55e 0.1%, var(--gray-200) 0.1%);
    outline: none;
    cursor: pointer;
}

.impact-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #16a34a;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(22, 163, 74, 0.3);
    border: 3px solid var(--white);
    transition: transform 0.15s ease;
}

.impact-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.impact-range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #16a34a;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(22, 163, 74, 0.3);
    border: 3px solid var(--white);
}

.impact-value-box {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    min-width: 120px;
}

.impact-number-input {
    width: 90px;
    border: none;
    background: transparent;
    font-size: 1.1rem;
    font-weight: 700;
    color: #16a34a;
    text-align: right;
    outline: none;
    font-family: inherit;
}

.impact-number-input::-webkit-inner-spin-button,
.impact-number-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.impact-unit {
    font-size: 0.85rem;
    color: var(--gray-500);
    font-weight: 500;
}

.impact-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
}

.impact-stat-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.impact-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.impact-trees-card {
    border: 2px solid rgba(34, 197, 94, 0.2);
    background: linear-gradient(135deg, #f0fdf4, var(--white));
}

.impact-stat-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.impact-stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: #16a34a;
    line-height: 1.1;
    margin-bottom: 4px;
}

.impact-trees-card .impact-stat-number {
    font-size: 2.6rem;
}

.impact-stat-label {
    font-size: 0.82rem;
    color: var(--gray-600);
    font-weight: 500;
}

.impact-forest {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
    max-width: 600px;
    min-height: 40px;
    transition: all 0.3s ease;
    font-size: 1.4rem;
    line-height: 1.6;
}

.impact-forest .tree-icon {
    display: inline-block;
    animation: treeGrow 0.3s ease forwards;
    transform-origin: bottom center;
}

@keyframes treeGrow {
    0% { transform: scale(0); opacity: 0; }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

.impact-message {
    font-size: 1.1rem;
    font-weight: 600;
    color: #16a34a;
    text-align: center;
    padding: 12px 24px;
    background: rgba(34, 197, 94, 0.08);
    border-radius: 30px;
    transition: all 0.3s ease;
}

.impact-share-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: #16a34a;
    color: var(--white);
    border: none;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.impact-share-btn:hover {
    background: #15803d;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(22, 163, 74, 0.3);
}

@media (max-width: 768px) {
    .impact-widget {
        padding: 60px 0;
    }

    .impact-input-area {
        padding: 20px;
    }

    .impact-slider-row {
        flex-direction: column;
        gap: 12px;
    }

    .impact-value-box {
        min-width: auto;
        align-self: flex-end;
    }

    .impact-results {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .impact-stat-card {
        padding: 20px 16px;
    }

    .impact-stat-number {
        font-size: 1.8rem;
    }

    .impact-trees-card .impact-stat-number {
        font-size: 2rem;
    }
}