/* ===== DESIGN SYSTEM & VARIABLES ===== */
:root {
    --solar-amber: #F59E0B;
    --solar-amber-light: #FCD34D;
    --solar-amber-dark: #D97706;
    --solar-blue: #3B82F6;
    --solar-blue-light: #60A5FA;
    --solar-blue-dark: #1D4ED8;
    --solar-green: #10B981;
    --solar-purple: #8B5CF6;
    --dark-900: #0F172A;
    --dark-800: #1E293B;
    --dark-700: #334155;
    --dark-600: #475569;
    --slate-400: #94A3B8;
    --slate-300: #CBD5E1;
    --slate-200: #E2E8F0;
    --slate-100: #F1F5F9;
    --white: #FFFFFF;
    --font: 'Inter', sans-serif;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 14px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.18);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font);
    color: var(--dark-800);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
input, select { font-family: var(--font); }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== HEADER ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo { display: flex; align-items: center; flex-shrink: 0; }
.logo-svg { height: 40px; width: auto; }

/* Navigation */
.main-nav { margin-left: auto; margin-right: 16px; }
.nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark-700);
    border-radius: var(--radius-full);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
    position: relative;
}
.nav-link:hover, .nav-link.active {
    color: var(--solar-blue);
    background: rgba(59,130,246,0.08);
}
.nav-link svg { transition: transform var(--transition); }

/* Dropdown */
.nav-dropdown { position: relative; }
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(0,0,0,0.06);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    z-index: 100;
}
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: var(--white);
    border-top: 1px solid rgba(0,0,0,0.06);
    border-left: 1px solid rgba(0,0,0,0.06);
}
/* Desktop-only hover — scoped so it doesn't interfere with mobile tap */
@media (min-width: 769px) {
    .nav-dropdown:hover .dropdown-menu,
    .nav-dropdown.open .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }
    .nav-dropdown:hover .nav-link svg {
        transform: rotate(180deg);
    }
}
.dropdown-menu li a {
    display: block;
    padding: 10px 14px;
    font-size: 0.875rem;
    color: var(--dark-700);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.dropdown-menu li a:hover {
    background: rgba(59,130,246,0.08);
    color: var(--solar-blue);
    padding-left: 18px;
}

/* Search */
.search-btn {
    padding: 10px;
    color: var(--dark-600);
    border-radius: var(--radius-full);
    transition: all var(--transition);
}
.search-btn:hover {
    background: rgba(59,130,246,0.08);
    color: var(--solar-blue);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--dark-700);
    border-radius: 2px;
    transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* Search Overlay */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    background: var(--white);
    z-index: 1100;
    display: flex;
    align-items: center;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    transition: transform 0.35s ease;
}
.search-overlay.active {
    transform: translateY(0);
}
.search-overlay-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}
.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1.1rem;
    padding: 12px 0;
    color: var(--dark-800);
    background: transparent;
}
.search-input::placeholder { color: var(--slate-400); }
.search-close {
    padding: 8px;
    color: var(--dark-600);
    border-radius: var(--radius-full);
    transition: all var(--transition);
}
.search-close:hover { background: rgba(0,0,0,0.05); }

/* ===== HERO BANNER ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #020617 0%, #0a1628 15%, #0c2341 30%, #0f2d50 45%, #132e4a 55%, #0a1a33 75%, #030812 100%);
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 70% 20%, rgba(245,158,11,0.12) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 30% 70%, rgba(59,130,246,0.1) 0%, transparent 50%),
        radial-gradient(ellipse 90% 60% at 50% 50%, rgba(139,92,246,0.06) 0%, transparent 60%);
    z-index: 1;
    animation: auroraPulse 8s ease-in-out infinite alternate;
}
@keyframes auroraPulse {
    0% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
    100% { opacity: 0.8; transform: scale(1.02); }
}
/* Animated mesh grid */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 1;
    animation: meshDrift 20s linear infinite;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black, transparent);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black, transparent);
}
@keyframes meshDrift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}
.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 2;
    overflow: hidden;
}

/* Sun — bigger, more dramatic */
.hero-sun {
    position: absolute;
    top: 6%;
    right: 12%;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: radial-gradient(circle, #F59E0B 0%, rgba(245,158,11,0.7) 30%, rgba(245,158,11,0.2) 55%, transparent 70%);
    box-shadow:
        0 0 60px 20px rgba(245,158,11,0.4),
        0 0 120px 50px rgba(245,158,11,0.2),
        0 0 240px 100px rgba(245,158,11,0.08),
        inset 0 0 30px 10px rgba(255,255,255,0.15);
    animation: sunPulse 4s ease-in-out infinite;
}
@keyframes sunPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 60px 20px rgba(245,158,11,0.4), 0 0 120px 50px rgba(245,158,11,0.2), 0 0 240px 100px rgba(245,158,11,0.08), inset 0 0 30px 10px rgba(255,255,255,0.15);
    }
    50% {
        transform: scale(1.1);
        box-shadow: 0 0 80px 30px rgba(245,158,11,0.5), 0 0 160px 70px rgba(245,158,11,0.25), 0 0 300px 120px rgba(245,158,11,0.1), inset 0 0 40px 15px rgba(255,255,255,0.2);
    }
}

/* Rays — longer, more vibrant */
.hero-rays {
    position: absolute;
    top: 6%;
    right: 12%;
    width: 160px;
    height: 160px;
}
.hero-rays span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2.5px;
    height: 60px;
    background: linear-gradient(to bottom, rgba(245,158,11,0.7), rgba(245,158,11,0.1), transparent);
    transform-origin: top center;
    animation: rayRotate 8s linear infinite;
    border-radius: 2px;
}
.hero-rays span:nth-child(1) { transform: rotate(0deg) translateY(65px); animation-delay: 0s; }
.hero-rays span:nth-child(2) { transform: rotate(45deg) translateY(65px); animation-delay: 1s; }
.hero-rays span:nth-child(3) { transform: rotate(90deg) translateY(65px); animation-delay: 2s; }
.hero-rays span:nth-child(4) { transform: rotate(135deg) translateY(65px); animation-delay: 3s; }
.hero-rays span:nth-child(5) { transform: rotate(180deg) translateY(65px); animation-delay: 4s; }
.hero-rays span:nth-child(6) { transform: rotate(225deg) translateY(65px); animation-delay: 5s; }
.hero-rays span:nth-child(7) { transform: rotate(270deg) translateY(65px); animation-delay: 6s; }
.hero-rays span:nth-child(8) { transform: rotate(315deg) translateY(65px); animation-delay: 7s; }
@keyframes rayRotate {
    0% { opacity: 0.2; height: 50px; }
    50% { opacity: 1; height: 80px; }
    100% { opacity: 0.2; height: 50px; }
}

/* Particles — enhanced with glow */
.hero-particles i {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--solar-amber);
    opacity: 0;
    animation: particleFloat 6s ease-in-out infinite;
    box-shadow: 0 0 6px 2px rgba(245,158,11,0.4);
}
.hero-particles i:nth-child(1) { left: 10%; top: 70%; animation-delay: 0s; animation-duration: 5s; }
.hero-particles i:nth-child(2) { left: 25%; top: 80%; animation-delay: 0.8s; animation-duration: 7s; }
.hero-particles i:nth-child(3) { left: 40%; top: 75%; animation-delay: 1.2s; animation-duration: 6s; }
.hero-particles i:nth-child(4) { left: 55%; top: 85%; animation-delay: 2s; animation-duration: 5.5s; }
.hero-particles i:nth-child(5) { left: 70%; top: 72%; animation-delay: 0.5s; animation-duration: 6.5s; }
.hero-particles i:nth-child(6) { left: 80%; top: 78%; animation-delay: 1.8s; animation-duration: 7.5s; }
.hero-particles i:nth-child(7) { left: 15%; top: 60%; animation-delay: 3s; animation-duration: 5.2s; background: var(--solar-blue-light); box-shadow: 0 0 6px 2px rgba(59,130,246,0.4); }
.hero-particles i:nth-child(8) { left: 35%; top: 65%; animation-delay: 2.5s; animation-duration: 6.8s; background: var(--solar-blue-light); box-shadow: 0 0 6px 2px rgba(59,130,246,0.4); }
.hero-particles i:nth-child(9) { left: 60%; top: 55%; animation-delay: 1s; animation-duration: 7.2s; background: var(--solar-blue-light); box-shadow: 0 0 6px 2px rgba(59,130,246,0.4); }
.hero-particles i:nth-child(10) { left: 85%; top: 60%; animation-delay: 3.5s; animation-duration: 5.8s; background: var(--solar-blue-light); box-shadow: 0 0 6px 2px rgba(59,130,246,0.4); }
.hero-particles i:nth-child(11) { left: 20%; top: 50%; animation-delay: 0.3s; width: 3px; height: 3px; }
.hero-particles i:nth-child(12) { left: 45%; top: 40%; animation-delay: 2.2s; width: 3px; height: 3px; }
.hero-particles i:nth-child(13) { left: 65%; top: 45%; animation-delay: 1.5s; width: 6px; height: 6px; box-shadow: 0 0 10px 4px rgba(245,158,11,0.5); }
.hero-particles i:nth-child(14) { left: 30%; top: 30%; animation-delay: 4s; width: 3px; height: 3px; background: var(--solar-blue-light); box-shadow: 0 0 6px 2px rgba(59,130,246,0.4); }
.hero-particles i:nth-child(15) { left: 75%; top: 35%; animation-delay: 2.8s; width: 6px; height: 6px; background: var(--solar-blue-light); box-shadow: 0 0 10px 4px rgba(59,130,246,0.5); }
@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(0) scale(0); }
    15% { opacity: 0.9; transform: translateY(-20px) scale(1.2); }
    50% { opacity: 0.6; transform: translateY(-80px) scale(1); }
    85% { opacity: 0.3; transform: translateY(-140px) scale(0.7); }
    100% { opacity: 0; transform: translateY(-200px) scale(0); }
}

/* Hero Panels SVG — brighter, more visible */
.hero-panels-svg {
    position: absolute;
    bottom: 4%;
    right: 2%;
    left: auto;
    transform: none;
    width: 48%;
    max-width: 580px;
    opacity: 0.7;
    filter: drop-shadow(0 0 20px rgba(59,130,246,0.15));
}
.panel-row {
    animation: panelGlow 3s ease-in-out infinite alternate;
}
.panel-row:nth-child(2) { animation-delay: 1s; }
.panel-row:nth-child(3) { animation-delay: 2s; }
@keyframes panelGlow {
    0% { opacity: 0.5; filter: brightness(0.9); }
    100% { opacity: 1; filter: brightness(1.3); }
}
.panel-shimmer {
    animation: shimmerMove 3.5s linear infinite;
}
@keyframes shimmerMove {
    0% { x: -100; }
    100% { x: 650; }
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 2;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 120px 24px 80px;
    width: 100%;
}
.hero-badge {
    display: inline-block;
    background: rgba(245,158,11,0.15);
    color: var(--solar-amber-light);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(245,158,11,0.25);
    backdrop-filter: blur(8px);
}
.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--white);
    line-height: 1.15;
    max-width: 700px;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}
.text-gradient {
    background: linear-gradient(135deg, var(--solar-amber), var(--solar-amber-light), var(--solar-blue-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 1.15rem;
    color: var(--slate-300);
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.7;
}
.hero-btns {
    display: flex;
    gap: 16px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition);
    border: 2px solid transparent;
}
.btn-primary {
    background: linear-gradient(135deg, var(--solar-amber), var(--solar-amber-dark));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(245,158,11,0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(245,158,11,0.45);
}
.btn-outline {
    border-color: rgba(255,255,255,0.3);
    color: var(--white);
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(4px);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 40px;
}
.hero-stat {
    display: flex;
    flex-direction: column;
}
.hero-stat strong {
    font-size: 1.5rem;
    color: var(--white);
    font-weight: 800;
}
.hero-stat span {
    font-size: 0.8rem;
    color: var(--slate-400);
    font-weight: 500;
}

/* ===== SECTION COMMON ===== */
.section-header {
    text-align: center;
    max-width: 620px;
    margin: 0 auto 56px;
}
.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(245,158,11,0.1));
    color: var(--solar-blue);
    padding: 6px 18px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
}
.section-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--dark-900);
    margin-bottom: 14px;
    letter-spacing: -0.01em;
}
.section-header p {
    color: var(--dark-600);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* ===== FUN FACTS ===== */
.funfacts {
    padding: 80px 0;
    background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 25%, #FDE68A33 50%, #DBEAFE 75%, #EFF6FF 100%);
    position: relative;
}
.funfacts::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(245,158,11,0.3), rgba(59,130,246,0.3), transparent);
}
.funfacts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.funfact-card {
    text-align: center;
    padding: 36px 20px;
    background: rgba(255,255,255,0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(245,158,11,0.15);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(245,158,11,0.06);
}
.funfact-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(245,158,11,0.08), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition);
}
.funfact-card:hover::before { opacity: 1; }
.funfact-card:hover {
    transform: translateY(-6px);
    border-color: rgba(245,158,11,0.3);
    box-shadow: 0 12px 40px rgba(245,158,11,0.12);
}
.funfact-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(59,130,246,0.08));
}
.funfact-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dark-900);
    margin-bottom: 6px;
    background: linear-gradient(135deg, var(--solar-amber-dark), var(--solar-blue-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.funfact-label {
    font-size: 0.9rem;
    color: var(--dark-600);
    font-weight: 500;
}

/* ===== CALCULATOR ===== */
.calculator-section {
    padding: 100px 0;
    background: var(--slate-100);
}
.calc-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.06);
}
.calc-form-side {
    padding: 48px 40px;
}
.calc-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--dark-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--slate-200);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--dark-800);
    background: var(--white);
    transition: all var(--transition);
    outline: none;
}
.form-group input:focus,
.form-group select:focus {
    border-color: var(--solar-blue);
    box-shadow: 0 0 0 4px rgba(59,130,246,0.1);
}
.form-group input::placeholder { color: var(--slate-400); }
.btn-calc {
    align-self: flex-start;
    margin-top: 8px;
}

/* Results Side */
.calc-results-side {
    background: linear-gradient(135deg, var(--dark-900), var(--dark-800));
    padding: 48px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.calc-result-placeholder {
    text-align: center;
    color: var(--slate-400);
}
.calc-result-placeholder p {
    margin-top: 16px;
    font-size: 0.95rem;
    line-height: 1.6;
}
.calc-result-data {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
}
.result-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.08);
    transition: all var(--transition);
    animation: resultSlideIn 0.5s ease forwards;
    opacity: 0;
    transform: translateX(20px);
}
.result-card:nth-child(2) { animation-delay: 0.1s; }
.result-card:nth-child(3) { animation-delay: 0.2s; }
.result-card:nth-child(4) { animation-delay: 0.3s; }
@keyframes resultSlideIn {
    to { opacity: 1; transform: translateX(0); }
}
.result-card:hover { background: rgba(255,255,255,0.1); }
.result-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.05);
    flex-shrink: 0;
}
.result-label {
    display: block;
    font-size: 0.78rem;
    color: var(--slate-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}
.result-value {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--white);
}

/* ===== CATEGORIES ===== */
.categories-section {
    padding: 100px 0;
    background: var(--white);
}
.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.category-card {
    position: relative;
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 52px 28px 32px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: visible;
}
.category-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    padding: 2px;
    background: linear-gradient(135deg, var(--solar-amber), var(--solar-blue));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition);
}
.category-card:hover::before { opacity: 1; }
.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    border-color: transparent;
}

/* Icon at top center border */
.category-icon-wrap {
    position: absolute;
    top: -26px;
    left: 50%;
    transform: translateX(-50%);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--slate-200);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    z-index: 2;
}
.category-card:hover .category-icon-wrap {
    border-color: var(--solar-amber);
    box-shadow: 0 4px 20px rgba(245,158,11,0.25);
    transform: translateX(-50%) scale(1.1);
}

.category-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--slate-200), var(--slate-300));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    transition: all var(--transition);
}
.category-card:hover .category-number {
    background: linear-gradient(135deg, var(--solar-amber), var(--solar-blue));
    -webkit-background-clip: text;
    background-clip: text;
}
.category-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark-900);
    margin-bottom: 16px;
}
.category-list {
    text-align: left;
    margin-bottom: 20px;
}
.category-list li {
    padding: 7px 0;
    font-size: 0.88rem;
    color: var(--dark-600);
    border-bottom: 1px solid var(--slate-100);
    display: flex;
    align-items: center;
    gap: 8px;
}
.category-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--solar-amber);
    flex-shrink: 0;
}
.category-list li:last-child { border-bottom: none; }
.category-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--solar-blue);
    transition: all var(--transition);
}
.category-link:hover {
    color: var(--solar-blue-dark);
    gap: 10px;
}

/* ===== INFO SECTION ===== */
.info-section {
    padding: 100px 0;
    background: var(--slate-100);
}
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.info-illustration { position: relative; }
.info-svg {
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 10px 30px rgba(0,0,0,0.15));
}
.info-panel {
    animation: panelGlow 2.5s ease-in-out infinite alternate;
}
.info-panel:nth-child(2) { animation-delay: 0.8s; }
.info-panel:nth-child(3) { animation-delay: 1.6s; }
.info-sun {
    animation: sunPulse 4s ease-in-out infinite;
}
.info-ray {
    animation: rayDash 3s linear infinite;
}
@keyframes rayDash {
    0% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -14; }
}
.info-text .section-tag { margin-bottom: 14px; }
.info-text h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-900);
    margin-bottom: 18px;
    line-height: 1.25;
}
.info-text p {
    color: var(--dark-600);
    margin-bottom: 28px;
    line-height: 1.7;
    font-size: 1.02rem;
}
.info-benefits {
    margin-bottom: 32px;
}
.info-benefits li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--dark-700);
}

/* ===== BLOG ===== */
.blog-section {
    padding: 100px 0;
    background: var(--white);
}
.blog-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.blog-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--slate-200);
    transition: all 0.4s ease;
}
.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}
.blog-card-img {
    position: relative;
    overflow: hidden;
    height: 200px;
}
.blog-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.blog-card:hover .blog-card-img img {
    transform: scale(1.06);
}
.blog-category {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--solar-amber);
    color: var(--white);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.blog-card-body {
    padding: 20px;
}
.blog-date {
    display: block;
    font-size: 0.78rem;
    color: var(--slate-400);
    margin-bottom: 8px;
    font-weight: 500;
}
.blog-card-body h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark-900);
    margin-bottom: 8px;
    line-height: 1.4;
}
.blog-card-body h3 a:hover { color: var(--solar-blue); }
.blog-card-body p {
    font-size: 0.85rem;
    color: var(--dark-600);
    margin-bottom: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-readmore {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--solar-blue);
    transition: all var(--transition);
}
.blog-readmore:hover { gap: 10px; color: var(--solar-blue-dark); }

/* Contact CTA removed */

/* ===== FOOTER ===== */
.site-footer {
    background: var(--dark-900);
    padding: 72px 0 0;
    color: var(--slate-400);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo { display: inline-block; margin-bottom: 16px; }
.footer-logo-svg { height: 36px; width: auto; }
.footer-about p {
    font-size: 0.9rem;
    line-height: 1.7;
}
.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
}
.footer-col h4::after {
    content: '';
    display: block;
    width: 30px;
    height: 2px;
    background: var(--solar-amber);
    margin-top: 10px;
    border-radius: 2px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    font-size: 0.88rem;
    color: var(--slate-400);
    transition: all var(--transition);
}
.footer-col ul li a:hover {
    color: var(--solar-amber);
    padding-left: 4px;
}

/* Newsletter */
.footer-newsletter p {
    font-size: 0.88rem;
    margin-bottom: 16px;
    line-height: 1.6;
}
.newsletter-form {
    display: flex;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.12);
    transition: border-color var(--transition);
}
.newsletter-form:focus-within {
    border-color: var(--solar-amber);
}
.newsletter-form input {
    flex: 1;
    border: none;
    background: rgba(255,255,255,0.05);
    padding: 12px 16px;
    color: var(--white);
    font-size: 0.88rem;
    outline: none;
    min-width: 0;
}
.newsletter-form input::placeholder { color: var(--slate-400); }
.newsletter-form button {
    padding: 12px 18px;
    background: var(--solar-amber);
    color: var(--white);
    transition: background var(--transition);
}
.newsletter-form button:hover { background: var(--solar-amber-dark); }

/* Social */
.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}
.social-link {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.06);
    color: var(--slate-400);
    transition: all var(--transition);
}
.social-link:hover {
    background: var(--solar-amber);
    color: var(--white);
    transform: translateY(-3px);
}

/* Footer Bottom */
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    font-size: 0.82rem;
}
.footer-bottom-links {
    display: flex;
    gap: 24px;
}
.footer-bottom-links a {
    color: var(--slate-400);
    transition: color var(--transition);
}
.footer-bottom-links a:hover { color: var(--solar-amber); }

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero h1 { font-size: 2.8rem; }
    .categories-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    /* Header Mobile */
    .hamburger { display: flex; }
    .search-btn { display: none !important; }
    .logo-svg { height: 32px; width: auto; }
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        box-shadow: -5px 0 30px rgba(0,0,0,0.15);
        transition: right 0.35s ease;
        padding: 80px 24px 24px;
        z-index: 999;
        overflow-y: auto;
    }
    .main-nav.active { right: 0; }
    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }
    .nav-link {
        padding: 14px 16px;
        border-radius: var(--radius-sm);
        font-size: 1rem;
    }
    .dropdown-menu {
        position: static !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        box-shadow: none;
        border: none;
        padding: 0;
        margin-top: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
        background: rgba(59,130,246,0.04);
        border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        min-width: unset;
        width: 100%;
    }
    .dropdown-menu li a {
        padding: 14px 16px 14px 20px;
        font-size: 0.95rem;
        color: var(--dark-700);
        border-radius: 0;
        min-height: 48px;
        display: flex;
        align-items: center;
        border-left: 3px solid transparent;
        transition: all 0.2s ease;
    }
    .dropdown-menu li a:hover,
    .dropdown-menu li a:active {
        background: rgba(59,130,246,0.08);
        color: var(--solar-blue);
        border-left-color: var(--solar-blue);
        padding-left: 24px;
    }
    .dropdown-menu li:not(:last-child) a {
        border-bottom: 1px solid rgba(0,0,0,0.04);
    }
    .dropdown-menu::before { display: none !important; }
    .nav-dropdown.open .dropdown-menu {
        max-height: 300px;
        padding: 4px 0;
    }
    .nav-dropdown .nav-link svg {
        transition: transform 0.3s ease;
        margin-left: auto;
        flex-shrink: 0;
    }
    .nav-dropdown.open .nav-link svg {
        transform: rotate(180deg);
    }
    /* Make the dropdown toggle look tappable on mobile */
    .nav-dropdown .dropdown-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        -webkit-tap-highlight-color: transparent;
    }
    /* Ensure dropdown parent doesn't clip */
    .nav-dropdown {
        position: static;
    }
    /* Hero Mobile */
    .hero { min-height: auto; padding: 100px 0 60px; }
    .hero-content { padding: 40px 24px; }
    .hero h1 { font-size: 2rem; }
    .hero-desc { font-size: 1rem; }
    .hero-panels-svg { width: 90%; bottom: 2%; opacity: 0.3; }
    .hero-sun { width: 80px; height: 80px; top: 5%; right: 5%; }
    .hero-rays { width: 80px; height: 80px; top: 5%; right: 5%; }
    .hero-btns { flex-direction: column; width: 100%; }
    .hero-btns .btn { width: 100%; justify-content: center; }
    .hero-stats { gap: 16px; flex-direction: column; align-items: flex-start; }
    .hero-stat strong { font-size: 1.2rem; }

    /* Fun Facts */
    .funfacts-grid { grid-template-columns: repeat(2, 1fr); }
    .funfact-number { font-size: 2rem; }

    /* Calculator */
    .calculator-section { padding: 60px 0; }
    .calc-wrapper { grid-template-columns: 1fr; }
    .calc-form-side { padding: 32px 24px; }
    .calc-results-side { padding: 32px 24px; }
    .form-row { grid-template-columns: 1fr; }

    /* Info */
    .info-section { padding: 60px 0; }
    .info-grid { grid-template-columns: 1fr; gap: 40px; }
    .info-illustration { order: -1; }
    .info-svg { max-width: 350px; }
    .info-text h2 { font-size: 1.7rem; }

    /* Blog */
    .blog-section { padding: 60px 0; }
    .blog-grid { grid-template-columns: 1fr; max-width: 100%; margin: 0 auto; }

    /* Categories */
    .categories-section { padding: 60px 0; }
    .categories-grid { grid-template-columns: 1fr; max-width: 100%; margin: 0 auto; gap: 32px; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-col h4::after { margin: 10px auto 0; }
    .footer-social { justify-content: center; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .newsletter-form { max-width: 320px; margin: 0 auto; }
}

@media (max-width: 480px) {
    .header-container { height: auto; padding: 16px 20px; }
    .logo-svg { height: 28px; width: auto; max-width: none; }
    .hero h1 { font-size: 1.7rem; }
    .hero-btns { flex-direction: column; width: 100%; gap: 16px; }
    .hero-btns .btn { width: 100%; justify-content: center; }
    .hero-stats { flex-direction: column; gap: 16px; align-items: flex-start; }
    .funfacts-grid { grid-template-columns: 1fr; max-width: 100%; margin: 0 auto; }
    .section-header h2 { font-size: 1.65rem; }
    .cta-inner { padding: 40px 20px; }
    .cta-inner h2 { font-size: 1.6rem; }
    .btn { padding: 12px 22px; font-size: 0.9rem; }
    .calc-btn-container { width: 100%; }
    .calc-btn-container .btn-calculate { width: 100%; justify-content: center; }
}

/* ===== COOKIE CONSENT ===== */
.cookie-consent {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 400px;
    max-width: calc(100vw - 48px);
    background: #fff;
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    transform: translateY(150%);
    opacity: 0;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease;
    border: 1px solid rgba(0,0,0,0.05);
}
.cookie-consent.show {
    transform: translateY(0);
    opacity: 1;
}
.cookie-icon {
    width: 40px;
    height: 40px;
    background: rgba(245, 158, 11, 0.1);
    color: var(--solar-amber);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-bottom: 16px;
}
.cookie-consent h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark-900);
}
.cookie-consent p {
    font-size: 0.9rem;
    color: var(--dark-600);
    line-height: 1.5;
    margin-bottom: 20px;
}
.cookie-consent p a {
    color: var(--solar-blue);
    text-decoration: underline;
}
.cookie-btns {
    display: flex;
    gap: 12px;
}
.cookie-btns button {
    flex: 1;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}
.btn-cookie-accept {
    background: var(--solar-blue);
    color: #fff;
}
.btn-cookie-accept:hover {
    background: var(--solar-blue-dark);
}
.btn-cookie-decline {
    background: var(--slate-100);
    color: var(--dark-700);
}
.btn-cookie-decline:hover {
    background: var(--slate-200);
}
@media (max-width: 480px) {
    .cookie-consent {
        bottom: 16px; left: 16px; right: 16px;
    }
}