/* ==========================================================================
   SUPERCHAT AI - Kerala & Hyderabad Identity Design System
   Kerala main theme: lush greens, temple gold, backwater teal, mural reds
   Hyderabad accents: Charminar pearl, Nizam regal purple
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Kerala Palette */
    --kerala-green: #1B5E20;
    --kerala-green-light: #43A047;
    --kerala-green-dark: #0D3B13;
    --kerala-gold: #FFB300;
    --kerala-gold-light: #FFD54F;
    --kerala-gold-dark: #E69500;
    --kerala-backwater: #00695C;
    --kerala-mural-red: #C62828;
    --kerala-cream: #FFF8E7;

    /* Hyderabad Accents */
    --hyd-pearl: #F5F0FF;
    --hyd-purple: #6A1B9A;

    /* Semantic Colors - Light */
    --bg: #FFFDF7;
    --bg-elevated: #FFFFFF;
    --bg-subtle: #F5F0E5;
    --text: #1A1A1A;
    --text-secondary: #555;
    --text-tertiary: #888;
    --accent: var(--kerala-green);
    --accent-light: var(--kerala-green-light);
    --accent-hover: #256D29;
    --gold: var(--kerala-gold);
    --border: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.15);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
    --card-bg: #FFFFFF;
    --card-border: rgba(0,0,0,0.06);
    --nav-bg: rgba(255,253,247,0.88);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-malayalam: 'Noto Sans Malayalam', sans-serif;

    /* Spacing */
    --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
    --sp-5: 20px; --sp-6: 24px; --sp-8: 32px; --sp-10: 40px;
    --sp-12: 48px; --sp-16: 64px; --sp-20: 80px; --sp-24: 96px;

    /* Radius */
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px;
    --radius-xl: 24px; --radius-full: 9999px;

    /* Transitions */
    --ease-out: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration: 0.3s;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg: #0A0F0A;
    --bg-elevated: #141A14;
    --bg-subtle: #1A221A;
    --text: #F0F0E8;
    --text-secondary: #A8A898;
    --text-tertiary: #6E6E60;
    --accent: #66BB6A;
    --accent-light: #81C784;
    --accent-hover: #76CC7A;
    --border: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.15);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.6);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.7);
    --card-bg: #141A14;
    --card-border: rgba(255,255,255,0.06);
    --nav-bg: rgba(10,15,10,0.88);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background var(--duration), color var(--duration);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--sp-6); }

/* ---------- Navigation ---------- */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: background var(--duration), box-shadow var(--duration);
}
.nav--scrolled { box-shadow: var(--shadow-md); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: var(--sp-8); }

.nav__logo { display: flex; align-items: flex-start; gap: 0; flex-shrink: 0; }
.nav__logo-img { height: 40px; width: auto; display: block; }
[data-theme="dark"] .nav__logo-img { filter: brightness(0) invert(1); }
.nav__logo-ai { font-size: 0.65rem; font-weight: 800; color: var(--kerala-green); vertical-align: super; line-height: 1; margin-top: 4px; letter-spacing: 0.02em; }
[data-theme="dark"] .nav__logo-ai { color: var(--accent); }

.nav__links { display: flex; gap: 2px; align-items: center; }
.nav__link { padding: var(--sp-2) var(--sp-3); font-size: 0.84rem; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-sm); transition: color var(--duration), background var(--duration); white-space: nowrap; }
.nav__link:hover { color: var(--text); background: var(--bg-subtle); }

.nav__actions { display: flex; align-items: center; gap: var(--sp-2); flex-shrink: 0; }
.nav__theme-toggle { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: none; border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; color: var(--text-secondary); transition: all var(--duration); }
.nav__theme-toggle:hover { color: var(--text); border-color: var(--border-strong); background: var(--bg-subtle); }
.nav__theme-toggle svg { width: 18px; height: 18px; }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

.nav__hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: var(--sp-2); }
.nav__hamburger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--duration); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
    font-family: var(--font-sans); font-weight: 600; font-size: 0.95rem;
    border: none; border-radius: var(--radius-sm); cursor: pointer;
    transition: all var(--duration) var(--ease-out); text-decoration: none; white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn--sm { padding: var(--sp-2) var(--sp-4); font-size: 0.85rem; }
.btn--lg { padding: var(--sp-4) var(--sp-8); font-size: 1rem; }
.btn--block { width: 100%; }

.btn--primary { background: var(--kerala-green); color: #fff; box-shadow: 0 2px 8px rgba(27,94,32,0.3); }
.btn--primary:hover { background: var(--accent-hover); box-shadow: 0 4px 16px rgba(27,94,32,0.4); transform: translateY(-1px); }
[data-theme="dark"] .btn--primary { background: var(--accent); color: #0A0F0A; }

.btn--gold { background: var(--kerala-gold); color: #1A1A1A; font-weight: 700; box-shadow: 0 2px 12px rgba(255,179,0,0.4); }
.btn--gold:hover { background: var(--kerala-gold-light); box-shadow: 0 4px 20px rgba(255,179,0,0.5); transform: translateY(-1px); }

.btn--outline { background: transparent; color: var(--text); border: 1.5px solid var(--border-strong); }
.btn--outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(27,94,32,0.05); }

.btn--ghost-light { background: rgba(255,255,255,0.15); color: #fff; border: 1.5px solid rgba(255,255,255,0.3); backdrop-filter: blur(8px); }
.btn--ghost-light:hover { background: rgba(255,255,255,0.25); border-color: rgba(255,255,255,0.5); }

/* ============================================
   HERO - Full-bleed Kerala imagery backdrop
   ============================================ */
.hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 120px 0 var(--sp-16); overflow: hidden;
}

.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__img {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    filter: brightness(0.6) saturate(1.3);
}
.hero__overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg,
        rgba(0,0,0,0.4) 0%,
        rgba(27,94,32,0.5) 40%,
        rgba(27,94,32,0.7) 100%
    );
}

.hero__content { position: relative; z-index: 1; text-align: center; max-width: 820px; margin: 0 auto; color: #fff; }

.hero__badge {
    display: inline-flex; align-items: center; gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-4);
    background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-full); font-size: 0.85rem; font-weight: 500;
    color: rgba(255,255,255,0.9); margin-bottom: var(--sp-8);
    backdrop-filter: blur(8px);
}
.hero__badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--kerala-gold); animation: pulse 2s ease-in-out infinite; }

@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.3); } }

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900;
    line-height: 1.05; letter-spacing: -0.03em; margin-bottom: var(--sp-4);
}
.hero__subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 400;
    color: var(--kerala-gold-light); margin-bottom: var(--sp-4);
}
.hero__desc {
    font-size: clamp(0.95rem, 1.5vw, 1.1rem); color: rgba(255,255,255,0.8);
    line-height: 1.7; max-width: 620px; margin: 0 auto var(--sp-10);
}
.hero__actions { display: flex; gap: var(--sp-4); justify-content: center; flex-wrap: wrap; margin-bottom: var(--sp-16); }

.hero__stats {
    display: flex; justify-content: center; gap: var(--sp-10); flex-wrap: wrap;
    padding-top: var(--sp-10); border-top: 1px solid rgba(255,255,255,0.15);
}
.hero__stat { text-align: center; }
.hero__stat-number { display: block; font-size: 2rem; font-weight: 800; color: var(--kerala-gold); letter-spacing: -0.02em; }
.hero__stat-label { font-size: 0.82rem; color: rgba(255,255,255,0.7); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }

/* ============================================
   ORIGIN STRIP
   ============================================ */
.origin {
    background: linear-gradient(135deg, var(--kerala-green-dark), var(--kerala-green), var(--kerala-backwater));
    padding: var(--sp-6) 0; color: #fff;
}
.origin__inner { text-align: center; }
.origin__text { font-size: 1rem; color: rgba(255,255,255,0.9); }
.origin__text strong { color: var(--kerala-gold); font-weight: 700; }
.origin__logos { margin-top: var(--sp-2); }
.origin__logos span { font-size: 0.8rem; color: rgba(255,255,255,0.5); letter-spacing: 0.05em; text-transform: uppercase; }

/* ============================================
   STORY CAPABILITIES - Full-bleed image sections
   ============================================ */
.story-cap__section {
    position: relative; min-height: 70vh;
    display: flex; align-items: center;
    overflow: hidden;
}

.story-cap__bg {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    background-attachment: fixed;
    transition: transform 0.6s var(--ease-out);
}
.story-cap__section:hover .story-cap__bg { transform: scale(1.02); }

.story-cap__overlay {
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.6) 50%, rgba(0,0,0,0.3) 100%);
}
.story-cap__section--right .story-cap__overlay {
    background: linear-gradient(270deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.6) 50%, rgba(0,0,0,0.3) 100%);
}

.story-cap__content {
    position: relative; z-index: 1; color: #fff;
    max-width: 560px; padding: var(--sp-16) 0;
}
.story-cap__section--right .story-cap__content {
    margin-left: auto;
}

.story-cap__label {
    font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.15em; color: var(--kerala-gold); margin-bottom: var(--sp-4);
}
.story-cap__title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 800;
    line-height: 1.15; letter-spacing: -0.02em; margin-bottom: var(--sp-4);
}
.story-cap__desc {
    font-size: 1.05rem; color: rgba(255,255,255,0.8);
    line-height: 1.7; margin-bottom: var(--sp-8);
}

.story-cap__highlights {
    display: flex; flex-direction: column; gap: var(--sp-4);
}
.story-cap__highlight {
    display: flex; align-items: center; gap: var(--sp-3);
    font-size: 0.95rem; font-weight: 500; color: rgba(255,255,255,0.9);
}
.story-cap__highlight svg { width: 22px; height: 22px; color: var(--kerala-gold); flex-shrink: 0; }

/* Language grid */
.story-cap__lang-grid {
    display: flex; flex-wrap: wrap; gap: var(--sp-3);
}
.story-cap__lang {
    padding: var(--sp-2) var(--sp-5);
    background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-full); font-size: 0.9rem; font-weight: 500; color: #fff;
    backdrop-filter: blur(4px);
}
.story-cap__lang--more { background: var(--kerala-gold); color: #1A1A1A; border-color: var(--kerala-gold); font-weight: 700; }

/* Agent grid */
.story-cap__agent-grid {
    display: flex; flex-wrap: wrap; gap: var(--sp-2);
}
.story-cap__agent-grid span {
    padding: var(--sp-1) var(--sp-4);
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-full); font-size: 0.82rem; font-weight: 500; color: rgba(255,255,255,0.85);
}

/* ============================================
   STANDARD SECTIONS (Models, Industries, etc.)
   ============================================ */
.section { padding: var(--sp-24) 0; }

.section__header { text-align: center; max-width: 650px; margin: 0 auto var(--sp-16); }
.section__tag {
    display: inline-block; padding: var(--sp-1) var(--sp-4);
    background: rgba(27,94,32,0.08); color: var(--accent);
    font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.08em; border-radius: var(--radius-full);
    margin-bottom: var(--sp-4); border: 1px solid rgba(27,94,32,0.12);
}
[data-theme="dark"] .section__tag { background: rgba(102,187,106,0.1); border-color: rgba(102,187,106,0.2); }

.section__title {
    font-size: clamp(2rem, 4vw, 3rem); font-weight: 800;
    line-height: 1.15; letter-spacing: -0.025em; margin-bottom: var(--sp-4);
}
.section__desc { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.7; }

/* --- Model Cards --- */
.models { background: var(--bg-subtle); }
.models__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }

.model-card {
    position: relative; padding: var(--sp-6);
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-lg); transition: all var(--duration) var(--ease-out);
}
.model-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: rgba(27,94,32,0.15); }

.model-card__badge {
    position: absolute; top: var(--sp-4); right: var(--sp-4);
    padding: 2px var(--sp-3); background: var(--kerala-gold); color: #1A1A1A;
    font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.05em; border-radius: var(--radius-full);
}
.model-card__header { display: flex; align-items: baseline; gap: var(--sp-3); margin-bottom: var(--sp-3); }
.model-card__name { font-size: 1.05rem; font-weight: 700; }
.model-card__size { font-size: 0.8rem; color: var(--text-tertiary); font-weight: 500; background: var(--bg-subtle); padding: 2px var(--sp-2); border-radius: var(--radius-sm); }
.model-card__desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: var(--sp-4); }
.model-card__caps { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.model-card__cap {
    padding: 2px var(--sp-3); background: rgba(27,94,32,0.06); color: var(--accent);
    font-size: 0.75rem; font-weight: 500; border-radius: var(--radius-full); border: 1px solid rgba(27,94,32,0.1);
}
[data-theme="dark"] .model-card__cap { background: rgba(102,187,106,0.08); border-color: rgba(102,187,106,0.15); }

/* --- Use Case Cards --- */
.usecases__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.usecase-card {
    padding: var(--sp-6); background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-lg); transition: all var(--duration) var(--ease-out);
}
.usecase-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.usecase-card__icon { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; color: var(--kerala-backwater); margin-bottom: var(--sp-4); }
[data-theme="dark"] .usecase-card__icon { color: var(--kerala-gold-light); }
.usecase-card__icon svg { width: 36px; height: 36px; }
.usecase-card__title { font-size: 1.05rem; font-weight: 700; margin-bottom: var(--sp-2); }
.usecase-card__desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }

/* --- Testimonials --- */
.testimonials { background: var(--bg-subtle); }
.testimonials__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.testimonial-card {
    padding: var(--sp-8); background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-lg); display: flex; flex-direction: column;
    justify-content: space-between; transition: all var(--duration);
}
.testimonial-card:hover { box-shadow: var(--shadow-md); }
.testimonial-card__quote { position: relative; margin-bottom: var(--sp-6); }
.testimonial-card__quote svg { position: absolute; top: -8px; left: -4px; width: 40px; height: 40px; color: var(--accent); }
.testimonial-card__quote p { position: relative; font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; font-style: italic; }
.testimonial-card__author { display: flex; align-items: center; gap: var(--sp-3); }
.testimonial-card__avatar {
    width: 42px; height: 42px; border-radius: 50%;
    background: linear-gradient(135deg, var(--kerala-green), var(--kerala-backwater));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1rem; flex-shrink: 0;
}
.testimonial-card__name { font-weight: 600; font-size: 0.9rem; }
.testimonial-card__role { font-size: 0.8rem; color: var(--text-tertiary); }

/* --- Pricing --- */
.pricing__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); align-items: start; }
.pricing-card {
    position: relative; padding: var(--sp-8);
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-lg); transition: all var(--duration);
}
.pricing-card--highlighted { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow-lg); transform: scale(1.02); }
.pricing-card__badge {
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    padding: var(--sp-1) var(--sp-4); background: var(--kerala-green); color: #fff;
    font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.05em; border-radius: var(--radius-full);
}
[data-theme="dark"] .pricing-card__badge { background: var(--accent); color: #0A0F0A; }
.pricing-card__name { font-size: 1.1rem; font-weight: 700; margin-bottom: var(--sp-3); }
.pricing-card__price { margin-bottom: var(--sp-4); display: flex; align-items: baseline; gap: var(--sp-1); }
.pricing-card__amount { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.03em; }
.pricing-card__period { font-size: 0.9rem; color: var(--text-tertiary); }
.pricing-card__desc { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: var(--sp-6); line-height: 1.6; }
.pricing-card__features { list-style: none; margin-bottom: var(--sp-8); }
.pricing-card__features li { display: flex; align-items: flex-start; gap: var(--sp-2); font-size: 0.88rem; color: var(--text-secondary); padding: var(--sp-2) 0; }
.pricing-card__features svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; margin-top: 2px; }

/* --- Demo --- */
.demo { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-subtle) 100%); }
.demo__inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-16); align-items: center; }
.demo__preview { perspective: 1000px; }
.demo__window { background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-xl); transform: rotateY(-3deg) rotateX(2deg); transition: transform var(--duration); }
.demo__window:hover { transform: rotateY(0) rotateX(0); }
.demo__window-bar { display: flex; gap: 6px; padding: var(--sp-3) var(--sp-4); background: var(--bg-subtle); border-bottom: 1px solid var(--border); }
.demo__window-bar span { width: 10px; height: 10px; border-radius: 50%; }
.demo__window-bar span:first-child { background: #FF5F56; }
.demo__window-bar span:nth-child(2) { background: #FFBD2E; }
.demo__window-bar span:last-child { background: #27CA40; }
.demo__window-content { padding: var(--sp-6); min-height: 250px; }
.demo__chat { display: flex; flex-direction: column; gap: var(--sp-4); }
.demo__msg { padding: var(--sp-4) var(--sp-5); border-radius: var(--radius-md); font-size: 0.9rem; line-height: 1.6; max-width: 85%; }
.demo__msg--user { background: var(--kerala-green); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
[data-theme="dark"] .demo__msg--user { background: var(--accent); color: #0A0F0A; }
.demo__msg--ai { background: var(--bg-subtle); color: var(--text); align-self: flex-start; border-bottom-left-radius: 4px; border: 1px solid var(--border); }

/* --- Contact --- */
.contact__inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-16); align-items: start; }
.contact__details { display: flex; flex-direction: column; gap: var(--sp-4); margin-top: var(--sp-8); }
.contact__detail { display: flex; align-items: center; gap: var(--sp-3); font-size: 0.95rem; color: var(--text-secondary); }
.contact__detail svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }

.form__group { margin-bottom: var(--sp-5); }
.form__label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text); margin-bottom: var(--sp-2); }
.form__input {
    width: 100%; padding: var(--sp-3) var(--sp-4);
    font-family: var(--font-sans); font-size: 0.95rem; color: var(--text);
    background: var(--bg); border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-sm); transition: all var(--duration); outline: none;
}
.form__input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(27,94,32,0.1); }
[data-theme="dark"] .form__input:focus { box-shadow: 0 0 0 3px rgba(102,187,106,0.15); }
.form__textarea { min-height: 120px; resize: vertical; }
.form__status { margin-top: var(--sp-4); font-size: 0.9rem; text-align: center; }
.form__status--success { color: var(--kerala-green); }
.form__status--error { color: var(--kerala-mural-red); }

/* --- Footer --- */
.footer { background: var(--bg-subtle); border-top: 1px solid var(--border); padding: var(--sp-16) 0 var(--sp-8); }
.footer__inner { display: flex; justify-content: space-between; gap: var(--sp-16); margin-bottom: var(--sp-12); }
.footer__tagline { font-size: 0.9rem; color: var(--text-tertiary); margin-top: var(--sp-4); }
.footer__links { display: flex; gap: var(--sp-16); }
.footer__col { display: flex; flex-direction: column; gap: var(--sp-3); }
.footer__col h4 { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text); margin-bottom: var(--sp-2); }
.footer__col a { font-size: 0.88rem; color: var(--text-secondary); transition: color var(--duration); }
.footer__col a:hover { color: var(--accent); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--sp-8); border-top: 1px solid var(--border); font-size: 0.82rem; color: var(--text-tertiary); }
.footer__love { display: flex; align-items: center; gap: var(--sp-1); font-size: 0.82rem; color: var(--text-tertiary); }
.footer__love svg { width: 14px; height: 14px; color: var(--kerala-mural-red); }

/* --- Hero locale title --- */
.hero__local-title {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--kerala-gold-light); font-weight: 600;
    margin-bottom: var(--sp-3); opacity: 0.9;
    letter-spacing: 0.01em;
}

/* ============================================
   CAPABILITY ROWS - Side-by-side image + content
   ============================================ */
.cap-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-16);
    align-items: center; margin-bottom: var(--sp-20);
}
.cap-row:last-child { margin-bottom: 0; }
.cap-row--reverse { direction: rtl; }
.cap-row--reverse > * { direction: ltr; }

.cap-row__image {
    position: relative; border-radius: var(--radius-xl); overflow: hidden;
    aspect-ratio: 4 / 3;
}
.cap-row__image img {
    width: 100%; height: 100%; object-fit: cover;
    border-radius: var(--radius-xl);
    transition: transform 0.6s var(--ease-out);
}
.cap-row:hover .cap-row__image img { transform: scale(1.03); }

.cap-row__image-accent {
    position: absolute; inset: 0;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    pointer-events: none;
}

.cap-row__content { padding: var(--sp-4) 0; }

.cap-row__number {
    font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.15em; color: var(--kerala-gold-dark);
    margin-bottom: var(--sp-3); display: block;
}
[data-theme="dark"] .cap-row__number { color: var(--kerala-gold); }

.cap-row__title {
    font-size: clamp(1.5rem, 2.5vw, 2rem); font-weight: 800;
    line-height: 1.2; letter-spacing: -0.02em; margin-bottom: var(--sp-4);
}
.cap-row__desc {
    font-size: 1rem; color: var(--text-secondary);
    line-height: 1.7; margin-bottom: var(--sp-6);
}
.cap-row__tags {
    display: flex; flex-wrap: wrap; gap: var(--sp-2);
}
.cap-row__tag {
    padding: var(--sp-2) var(--sp-4);
    background: rgba(27,94,32,0.06); color: var(--accent);
    font-size: 0.82rem; font-weight: 600;
    border-radius: var(--radius-full); border: 1px solid rgba(27,94,32,0.1);
}
[data-theme="dark"] .cap-row__tag {
    background: rgba(102,187,106,0.08); border-color: rgba(102,187,106,0.15);
}

/* --- Origin greeting --- */
.origin__greeting {
    font-size: 1.2rem; color: var(--kerala-gold-light);
    margin-right: var(--sp-2);
}

/* ============================================
   LANGUAGE SWITCHER
   ============================================ */
.lang-switcher { position: relative; }
.lang-switcher__btn {
    display: flex; align-items: center; gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-3);
    background: none; border: 1px solid var(--border);
    border-radius: var(--radius-sm); cursor: pointer;
    font-family: var(--font-sans); font-size: 0.82rem; font-weight: 500;
    color: var(--text-secondary); transition: all var(--duration);
}
.lang-switcher__btn:hover { color: var(--text); border-color: var(--border-strong); background: var(--bg-subtle); }
.lang-switcher__btn svg { flex-shrink: 0; }

.lang-switcher__menu {
    display: none; position: absolute; top: 100%; right: 0; margin-top: var(--sp-2);
    background: var(--bg-elevated); border: 1px solid var(--border);
    border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
    min-width: 160px; max-height: 320px; overflow-y: auto; z-index: 100;
    padding: var(--sp-2);
}
.lang-switcher__menu.open { display: block; }

.lang-switcher__item {
    display: block; padding: var(--sp-2) var(--sp-3);
    font-size: 0.85rem; font-weight: 500; color: var(--text-secondary);
    border-radius: var(--radius-sm); transition: all var(--duration);
    text-decoration: none;
}
.lang-switcher__item:hover { background: var(--bg-subtle); color: var(--text); }
.lang-switcher__item.active { color: var(--accent); font-weight: 600; background: rgba(27,94,32,0.05); }

/* ============================================
   TOOLTIPS (for non-English text)
   ============================================ */
.tt {
    position: relative; cursor: help;
    border-bottom: 1px dotted currentColor;
}
.lang-switcher.tt { border-bottom: none; cursor: default; }
/* Hide tooltip when dropdown is open */
.lang-switcher.tt:has(.lang-switcher__menu.open):hover::after,
.lang-switcher.tt:has(.lang-switcher__menu.open):hover::before,
.lang-switcher.tt.dropdown-open:hover::after,
.lang-switcher.tt.dropdown-open:hover::before { display: none; }
/* Button tooltips shouldn't have dotted underline */
.btn.tt { border-bottom: none; }

.tt:hover::after {
    content: attr(data-tip);
    position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%);
    padding: var(--sp-2) var(--sp-4);
    background: var(--text); color: var(--bg);
    font-size: 0.8rem; font-weight: 500; font-family: var(--font-sans);
    white-space: normal; max-width: 280px; width: max-content;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg); z-index: 9999;
    pointer-events: none; line-height: 1.5;
    text-align: center;
}
.tt:hover::before {
    content: '';
    position: absolute; bottom: calc(100% + 2px); left: 50%; transform: translateX(-50%);
    border: 5px solid transparent; border-top-color: var(--text);
    z-index: 9999;
}

/* Nav tooltips: show BELOW (since nav is at top of screen) and anchor right */
.nav__actions .tt:hover::after {
    bottom: auto; top: calc(100% + 8px);
    left: auto; right: 0; transform: none;
}
.nav__actions .tt:hover::before {
    bottom: auto; top: calc(100% + 2px);
    left: auto; right: 20px; transform: none;
    border-top-color: transparent; border-bottom-color: var(--text);
}

/* In hero (white text), invert tooltip */
.hero .tt { border-bottom-color: rgba(255,255,255,0.4); }
.hero .tt:hover::after { background: #fff; color: #1A1A1A; }
.hero .tt:hover::before { border-top-color: #fff; }

/* ============================================
   PRODUCT CARDS
   ============================================ */
.products { background: var(--bg-subtle); }
.products__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }

.product-card {
    position: relative; padding: var(--sp-8);
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    border-top: 4px solid var(--product-color, var(--kerala-green));
    transition: all var(--duration) var(--ease-out);
    display: flex; flex-direction: column;
}
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--product-color, var(--kerala-green));
}

.product-card__badge {
    position: absolute; top: var(--sp-4); right: var(--sp-4);
    padding: 3px var(--sp-3);
    color: #fff; font-size: 0.7rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.product-card__icon {
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    background: color-mix(in srgb, var(--product-color) 10%, transparent);
    border-radius: var(--radius-md);
    color: var(--product-color);
    margin-bottom: var(--sp-5);
}
.product-card__icon svg { width: 32px; height: 32px; }

.product-card__name {
    font-size: 1.3rem; font-weight: 800;
    letter-spacing: -0.02em; margin-bottom: var(--sp-1);
}
.product-card__tagline {
    font-size: 0.95rem; font-weight: 600;
    color: var(--product-color); margin-bottom: var(--sp-4);
}
.product-card__desc {
    font-size: 0.9rem; color: var(--text-secondary);
    line-height: 1.7; margin-bottom: var(--sp-6);
}
.product-card__features {
    list-style: none; margin-bottom: var(--sp-8); flex: 1;
}
.product-card__features li {
    display: flex; align-items: flex-start; gap: var(--sp-2);
    font-size: 0.85rem; color: var(--text-secondary);
    padding: var(--sp-2) 0; line-height: 1.5;
}
.product-card__features svg {
    width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px;
    color: var(--product-color);
}

/* color-mix fallback for older browsers */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
    .product-card__icon { background: rgba(27,94,32,0.08); }
}

/* ============================================
   IMAGE CAPTIONS (capability section)
   ============================================ */
.cap-row__caption {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: var(--sp-12) var(--sp-5) var(--sp-5);
    background: linear-gradient(0deg, rgba(0,0,0,0.8) 0%, transparent 100%);
    color: rgba(255,255,255,0.95); font-size: 0.92rem; font-weight: 500;
    line-height: 1.55; border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    opacity: 0; transition: opacity 0.4s var(--ease-out);
}
.cap-row__image { position: relative; }
.cap-row:hover .cap-row__caption { opacity: 1; }

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-in { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out); }
.animate-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   NAV DROPDOWNS
   ============================================ */
.nav__dropdown { position: relative; }
.nav__dropdown > .nav__link {
    display: inline-flex; align-items: center; gap: 4px;
}
.nav__dropdown-arrow {
    width: 12px; height: 12px; flex-shrink: 0;
    transition: transform var(--duration) var(--ease-out);
}
.nav__dropdown:hover .nav__dropdown-arrow { transform: rotate(180deg); }

.nav__dropdown-menu {
    display: none; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
    margin-top: 8px; padding: var(--sp-2);
    background: var(--bg-elevated); border: 1px solid var(--border);
    border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
    min-width: 200px; z-index: 1001;
}
/* Invisible bridge so mouse can travel from link to menu */
.nav__dropdown-menu::before {
    content: ''; position: absolute; top: -12px; left: 0; right: 0; height: 12px;
}
.nav__dropdown:hover > .nav__dropdown-menu { display: block; }

.nav__dropdown-item {
    display: block; padding: var(--sp-2) var(--sp-4);
    font-size: 0.88rem; font-weight: 500; color: var(--text-secondary);
    border-radius: var(--radius-sm); transition: all var(--duration);
    text-decoration: none; white-space: nowrap;
}
.nav__dropdown-item:hover {
    background: var(--bg-subtle); color: var(--accent);
}

/* Active nav link state */
.nav__link--active { color: var(--accent) !important; font-weight: 600; }

/* Mobile dropdown behavior */
@media (max-width: 768px) {
    .nav__dropdown { width: 100%; }
    .nav__dropdown > .nav__link { width: 100%; justify-content: space-between; }
    .nav__dropdown-menu {
        position: static; transform: none; margin-top: 0;
        box-shadow: none; border: none; padding-left: var(--sp-4);
        background: transparent; min-width: auto;
    }
    .nav__dropdown-menu::before { display: none; }
    /* On mobile show dropdown on tap via .active class */
    .nav__dropdown-menu { display: none; }
    .nav__dropdown.active > .nav__dropdown-menu { display: block; }
    .nav__dropdown:hover > .nav__dropdown-menu { display: none; }
    .nav__dropdown.active:hover > .nav__dropdown-menu { display: block; }
}

@media (prefers-reduced-motion: reduce) {
    .animate-in { opacity: 1; transform: none; transition: none; }
    .hero__badge-dot { animation: none; }
    .story-cap__bg { background-attachment: scroll; }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .models__grid, .usecases__grid, .testimonials__grid, .pricing__grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-card--highlighted { transform: none; }
    .story-cap__bg { background-attachment: scroll; }
}

@media (max-width: 768px) {
    .cap-row { grid-template-columns: 1fr; gap: var(--sp-8); margin-bottom: var(--sp-12); }
    .cap-row--reverse { direction: ltr; }
    .cap-row__image { aspect-ratio: 16 / 9; }

    .nav__links { display: none; }
    .nav__hamburger { display: flex; }
    .nav__links.active {
        display: flex; flex-direction: column;
        position: absolute; top: 72px; left: 0; right: 0;
        background: var(--bg-elevated); border-bottom: 1px solid var(--border);
        padding: var(--sp-4); box-shadow: var(--shadow-md);
    }

    .models__grid, .usecases__grid, .testimonials__grid, .pricing__grid, .products__grid { grid-template-columns: 1fr; }
    .demo__inner, .contact__inner { grid-template-columns: 1fr; gap: var(--sp-8); }

    .story-cap__section { min-height: auto; }
    .story-cap__content { max-width: 100%; padding: var(--sp-12) 0; }
    .story-cap__section--right .story-cap__content { margin-left: 0; }
    .story-cap__overlay,
    .story-cap__section--right .story-cap__overlay {
        background: rgba(0,0,0,0.75) !important;
    }

    .hero__stats { gap: var(--sp-6); }
    .hero__stat-number { font-size: 1.5rem; }
    .footer__inner { flex-direction: column; gap: var(--sp-8); }
    .footer__links { flex-wrap: wrap; gap: var(--sp-8); }
    .footer__bottom { flex-direction: column; gap: var(--sp-3); text-align: center; }
    .section { padding: var(--sp-16) 0; }
    .demo__window { transform: none; }
}

@media (max-width: 480px) {
    .hero__actions { flex-direction: column; align-items: center; }
    .hero__actions .btn { width: 100%; }
    .hero__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
}