/* ───────────── VARIABLES ───────────── */
:root {
    --primary: #4f46e5;
    --primary-light: #818cf8;
    --accent: #10b981;
    --accent-light: #34d399;
    --bg: #f8fafc;
    --surface: #ffffff;
    --dark: #0f172a;
    --ink: #1e293b;
    --muted: #64748b;
    --line: #e2e8f0;
}

/* ───────────── BASE ───────────── */
::selection { background: rgba(79,70,229,0.2); color: #1e293b; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }
html { scroll-behavior: smooth; }

/* ───────────── LOADER ───────────── */
#page-loader {
    position: fixed; inset: 0; z-index: 200;
    background: var(--bg);
    display: flex; align-items: center; justify-content: center;
    transition: opacity 0.6s ease;
}
#page-loader.fade-out { opacity: 0; pointer-events: none; }
.loader-pulse { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); animation: pulse-grow 1s ease-in-out infinite alternate; }
@keyframes pulse-grow { from { transform: scale(0.8); opacity: 0.5; } to { transform: scale(1.2); opacity: 1; } }

/* ───────────── NAV ───────────── */
.nav-link {
    position: relative; display: inline-flex; align-items: center; padding: 0.5rem 1rem;
    font-size: 0.875rem; font-weight: 500; color: var(--muted); border-radius: 9999px;
    transition: color 0.3s, background 0.3s;
}
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px;
    background: var(--primary); border-radius: 2px; transition: width 0.3s, left 0.3s;
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after, .nav-link.active::after { width: 60%; left: 20%; }
.nav-link.active { color: var(--primary); }

/* ───────────── BUTTONS ───────────── */
.btn-primary {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.75rem 1.75rem; border-radius: 9999px;
    background: var(--primary); color: #fff; font-weight: 600; font-size: 0.9375rem;
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
    box-shadow: 0 4px 14px rgba(79,70,229,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(79,70,229,0.4); background: #4338ca; }

.btn-outline {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.75rem 1.75rem; border-radius: 9999px;
    border: 2px solid var(--line); color: var(--ink); font-weight: 600; font-size: 0.9375rem;
    transition: border-color 0.3s, background 0.3s, transform 0.3s;
}
.btn-outline:hover { border-color: var(--primary); background: rgba(79,70,229,0.05); transform: translateY(-2px); }

.btn-accent {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.75rem 1.75rem; border-radius: 9999px;
    background: var(--accent); color: #fff; font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 14px rgba(16,185,129,0.3);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(16,185,129,0.4); }

/* ───────────── CARDS ───────────── */
.glass-card {
    background: rgba(255,255,255,0.7); backdrop-filter: blur(16px);
    border: 1px solid var(--line); border-radius: 1.5rem;
    transition: transform 0.4s, box-shadow 0.4s;
}
.glass-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); }

/* ───────────── HEADER ───────────── */
.site-header {
    transition: background 0.4s, box-shadow 0.4s, backdrop-filter 0.4s;
}
.site-header.scrolled {
    background: rgba(248,250,252,0.85); backdrop-filter: blur(20px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* ───────────── REVEAL ANIMATIONS ───────────── */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-50px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(50px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal-right.visible { opacity: 1; transform: translateX(0); }
.reveal-scale { opacity: 0; transform: scale(0.9); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal-scale.visible { opacity: 1; transform: scale(1); }

/* stagger children */
.stagger-children > *:nth-child(1) { transition-delay: 0s; }
.stagger-children > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-children > *:nth-child(5) { transition-delay: 0.4s; }
.stagger-children > *:nth-child(6) { transition-delay: 0.5s; }

/* ───────────── HERO SWIPER ───────────── */
.hero-swiper .swiper-pagination-bullet { background: #fff; opacity: 0.5; width: 12px; height: 12px; }
.hero-swiper .swiper-pagination-bullet-active { opacity: 1; background: var(--primary); width: 32px; border-radius: 6px; }

/* ───────────── DIAGONAL SECTION ───────────── */
.diagonal-top { clip-path: polygon(0 6%, 100% 0, 100% 100%, 0 100%); }
.diagonal-bottom { clip-path: polygon(0 0, 100% 0, 100% 94%, 0 100%); }

/* ───────────── FAQ ───────────── */
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; }
.faq-item.open .faq-answer { max-height: 200px; padding-top: 0.75rem; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-icon { transition: transform 0.3s ease; }

/* ───────────── COUNTER ───────────── */
.counter-number { font-variant-numeric: tabular-nums; }

/* ───────────── MARQUEE ───────────── */
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.marquee-track { animation: marquee 30s linear infinite; }

/* ───────────── COOKIE BANNER ───────────── */
.cookie-banner { transform: translateY(100%); transition: transform 0.5s cubic-bezier(0.16,1,0.3,1); }
.cookie-banner.show { transform: translateY(0); }

/* ───────────── FLOATING SHAPES ───────────── */
.floating { animation: float 6s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0px); } 50% { transform: translateY(-20px); } }
.floating-slow { animation: float 8s ease-in-out infinite; animation-delay: 1s; }

/* ───────────── GRADIENT TEXT ───────────── */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ───────────── IMAGE OVERLAY ───────────── */
.img-overlay { position: relative; overflow: hidden; border-radius: 1.5rem; }
.img-overlay img { transition: transform 0.6s ease; }
.img-overlay:hover img { transform: scale(1.05); }

/* ───────────── MOBILE MENU ───────────── */
.mobile-menu { transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.16,1,0.3,1); }
.mobile-menu.open { transform: translateX(0); }

/* ───────────── PARALLAX ───────────── */
.parallax-bg { transition: transform 0.1s linear; }

/* ───────────── FORM ───────────── */
.form-input {
    width: 100%; padding: 0.875rem 1rem; border: 2px solid var(--line); border-radius: 0.75rem;
    background: var(--surface); color: var(--ink); font-size: 0.9375rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(79,70,229,0.1); }

/* ───────────── PAGE TRANSITION ───────────── */
.page-transition {
    position: fixed; inset: 0; z-index: 300; background: var(--primary);
    transform: scaleY(0); transform-origin: bottom; transition: transform 0.5s cubic-bezier(0.86,0,0.07,1);
}
.page-transition.active { transform: scaleY(1); transform-origin: top; }