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

:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --blue-400: #2563eb;
    --blue-500: #2563eb;
    --blue-600: #2563eb;
    --blue-700: #2563eb;
    --blue-900: #1e3a8a;
    --green-50: #f0fdf4;
    --green-100: #dcfce7;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --orange-50: #fff7ed;
    --orange-100: #ffedd5;
    --orange-500: #f97316;
    --orange-600: #ea580c;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-700: #334155;
    --gray-900: #0f172a;
    --text-muted: #64748b;
    --text-dim: #94a3b8;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --radius-lg: 1.25rem;
    --radius-xl: 2rem;
}

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--blue-400) var(--gray-50);
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../assets/bg.png') center/cover no-repeat;
    z-index: -1;
    pointer-events: none;
    will-change: transform;
}

/* ─── CUSTOM SCROLLBAR ─── */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-50);
}

::-webkit-scrollbar-thumb {
    background: var(--blue-400);
    border-radius: 5px;
    border: 2px solid var(--gray-50);
}

::-webkit-scrollbar-thumb:hover {
    background: #1d4ed8; /* Darker blue on hover */
}

/* ─── UTILITY ─── */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.material-symbols-rounded {
    font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
    vertical-align: middle;
}

.filled {
    font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* ─── SECTION COMMON ─── */
section {
    padding: 6rem 0;
    position: relative;
    background: transparent;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--blue-400);
    margin-bottom: 0.75rem;
}

.section-title {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    font-size: clamp(1.8rem, 4vw, 3rem);
    letter-spacing: -0.025em;
    color: black;
    line-height: 1.2;
    text-align: center;
}

.section-sub {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
    max-width: 600px;
    line-height: 1.7;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

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

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

.fade-up-d1 { transition-delay: 0.1s; }
.fade-up-d2 { transition-delay: 0.2s; }
.fade-up-d3 { transition-delay: 0.3s; }