/* ═══════════════════════════════════════════════════════════
   EcoVolt CCM — Grid System Design Language
   Swiss-inspired, data-driven, precision engineering aesthetic
   ═══════════════════════════════════════════════════════════ */

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@200;300;400;500;600;700;800&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* ── Base ─────────────────────────────────────────────────── */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: #0A0A0A;
    color: #FAFAFA;
}

/* ── Swiss Grid Background ───────────────────────────────── */
.swiss-grid {
    background-image:
        linear-gradient(to right, rgba(255, 107, 53, 0.025) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 107, 53, 0.025) 1px, transparent 1px);
    background-size: 80px 80px;
}

/* ── Typography Scale ────────────────────────────────────── */
.text-display {
    font-size: clamp(3rem, 11vw, 9rem);
    line-height: 0.85;
    letter-spacing: -0.03em;
}

.text-headline {
    font-size: clamp(2rem, 6vw, 4.8rem);
    line-height: 0.9;
    letter-spacing: -0.02em;
}

.text-title {
    font-size: clamp(1.4rem, 3vw, 2.5rem);
    line-height: 1.05;
    letter-spacing: -0.01em;
}

.text-body-lg {
    font-size: clamp(1.05rem, 1.4vw, 1.35rem);
    line-height: 1.65;
}

.mono {
    font-family: 'Space Grotesk', monospace;
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}

/* ── Gradient Utilities ──────────────────────────────────── */
.text-gradient-orange {
    background: linear-gradient(135deg, #FF6B35, #FF4500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-gold {
    background: linear-gradient(135deg, #D4A574, #B87333);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Section Label ───────────────────────────────────────── */
.section-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: #FF6B35;
    margin-bottom: 1rem;
}

.section-label .line {
    width: 3rem;
    height: 1px;
    background: currentColor;
}

/* ── Data Card ───────────────────────────────────────────── */
.data-card {
    border: 1px solid rgba(255, 255, 255, 0.07);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.data-card::after {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.04), transparent 60%);
    transition: opacity 0.35s ease;
}

.data-card:hover {
    border-color: rgba(255, 107, 53, 0.4);
    transform: translateY(-2px);
}

.data-card:hover::after {
    opacity: 1;
}

/* ── Hover Underline ─────────────────────────────────────── */
.hover-line {
    position: relative;
}

.hover-line::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #FF6B35;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-line:hover::after {
    width: 100%;
}

/* ── Corner Brackets ─────────────────────────────────────── */
.corner-brackets {
    position: relative;
}

.corner-brackets::before,
.corner-brackets::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border-color: #FF6B35;
}

.corner-brackets::before {
    top: -4px;
    left: -4px;
    border-top: 2px solid;
    border-left: 2px solid;
}

.corner-brackets::after {
    bottom: -4px;
    right: -4px;
    border-bottom: 2px solid;
    border-right: 2px solid;
}

/* ── Reveal Animations ───────────────────────────────────── */
.reveal-up {
    clip-path: inset(100% 0 0 0);
    animation: revealUp 0.9s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

@keyframes revealUp {
    to {
        clip-path: inset(0 0 0 0);
    }
}

.reveal-right {
    clip-path: inset(0 100% 0 0);
    animation: revealRight 0.9s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

@keyframes revealRight {
    to {
        clip-path: inset(0 0 0 0);
    }
}

/* ── Stagger Children ────────────────────────────────────── */
.stagger>* {
    opacity: 0;
    animation: staggerIn 0.7s ease-out forwards;
}

.stagger>*:nth-child(1) { animation-delay: 0.1s; }
.stagger>*:nth-child(2) { animation-delay: 0.25s; }
.stagger>*:nth-child(3) { animation-delay: 0.4s; }
.stagger>*:nth-child(4) { animation-delay: 0.55s; }
.stagger>*:nth-child(5) { animation-delay: 0.7s; }
.stagger>*:nth-child(6) { animation-delay: 0.85s; }

@keyframes staggerIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Scroll-triggered animations ─────────────────────────── */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* ── Button styles ───────────────────────────────────────── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: #FF6B35;
    color: #0A0A0A;
    padding: 1rem 2rem;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.btn-primary:hover {
    background: #FF4500;
}

.btn-primary:hover::before {
    transform: translateX(100%);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1rem 2rem;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: all 0.3s ease;
    text-decoration: none;
    color: #FAFAFA;
}

.btn-outline:hover {
    border-color: #FAFAFA;
    background: #FAFAFA;
    color: #0A0A0A;
}

/* ── Sponsor Logo ────────────────────────────────────────── */
.sponsor-card {
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.35s ease;
    background: #0A0A0A;
}

.sponsor-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    background: rgba(255, 107, 53, 0.03);
}

.sponsor-card img {
    max-height: 48px;
    max-width: 140px;
    object-fit: contain;
    filter: grayscale(100%) brightness(2);
    opacity: 0.5;
    transition: all 0.35s ease;
}

.sponsor-card:hover img {
    filter: grayscale(0%) brightness(1);
    opacity: 1;
}

/* ── Mobile Menu ─────────────────────────────────────────── */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(24px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu a {
    font-size: 1.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(250, 250, 250, 0.6);
    transition: color 0.3s ease;
    text-decoration: none;
}

.mobile-menu a:hover {
    color: #FF6B35;
}

/* ── Custom scrollbar ────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #141414;
}

::-webkit-scrollbar-thumb {
    background: #FF6B35;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #FF8F5C;
}

/* ── Selection & Focus ───────────────────────────────────── */
::selection {
    background: #FF6B35;
    color: #FAFAFA;
}

:focus-visible {
    outline: 2px solid #FF6B35;
    outline-offset: 2px;
}

/* ── Reduced motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── EcoVolt Color Utility Classes ───────────────────────── */
/* These replace Tailwind theme colors for static deployment */
.text-ecovolt-orange { color: #FF6B35; }
.text-ecovolt-gold { color: #D4A574; }
.text-ecovolt-copper { color: #B87333; }
.text-ecovolt-ember { color: #FF4500; }
.bg-ecovolt-orange { background-color: #FF6B35; }
.bg-ecovolt-black { background-color: #0A0A0A; }
.bg-ecovolt-charcoal { background-color: #141414; }
.text-energy-green { color: #22C55E; }
.text-energy-teal { color: #14B8A6; }