/* ============================================================
   public.css  —  Shared styles for all public-facing pages
   Brand palette: purple #7c3aed → pink #db2777
   ============================================================ */

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

:root {
    --p1: #7c3aed;
    --p2: #db2777;
    --p1d: #5b21b6;
    --p2d: #9d174d;
    --grad: linear-gradient(135deg, var(--p1) 0%, var(--p2) 100%);
    --grad-anim: linear-gradient(135deg, var(--p1) 0%, var(--p2) 50%, #f59e0b 100%);
    --text: #1e1b4b;
    --muted: #6b7280;
    --light: #f5f3ff;
    --white: #ffffff;
    --border: #e5e7eb;
    --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
    --shadow:    0 10px 30px rgba(124,58,237,.12);
    --shadow-lg: 0 20px 50px rgba(124,58,237,.18);
    --radius: 1rem;
    --nav-h: 70px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    line-height: 1.65;
    background: var(--white);
    overflow-x: hidden;
}

/* ── Utility ──────────────────────────────────────────────── */
.container { max-width: 1180px; margin: 0 auto; padding: 0 1.5rem; }

.section { padding: 5.5rem 1.5rem; }
.section--alt { background: var(--light); }
.section--dark { background: var(--text); color: var(--white); }
.section--grad {
    background: var(--grad);
    color: var(--white);
}

.section-tag {
    display: inline-block;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--p1);
    background: #ede9fe;
    padding: .25rem .85rem;
    border-radius: 999px;
    margin-bottom: .9rem;
}
.section--grad .section-tag,
.section--dark .section-tag {
    color: var(--white);
    background: rgba(255,255,255,.2);
}

.section-title {
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1.15;
    color: var(--text);
}
.section--grad .section-title,
.section--dark .section-title { color: var(--white); }

.section-sub {
    font-size: 1.05rem;
    color: var(--muted);
    max-width: 540px;
    margin-top: .6rem;
}
.section--grad .section-sub,
.section--dark .section-sub { color: rgba(255,255,255,.8); }

.center { text-align: center; }
.center .section-sub { margin-left: auto; margin-right: auto; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .8rem 1.8rem;
    border-radius: 999px;
    font-weight: 700; font-size: .95rem;
    text-decoration: none;
    transition: transform .2s, box-shadow .2s, background .2s;
    cursor: pointer; border: none; font-family: inherit;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
    background: var(--grad);
    color: var(--white);
    box-shadow: 0 6px 20px rgba(124,58,237,.35);
}
.btn-primary:hover { box-shadow: 0 10px 28px rgba(124,58,237,.45); }

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,.7);
}
.btn-outline:hover { background: var(--white); color: var(--p1); border-color: var(--white); }

.btn-outline-dark {
    background: transparent;
    color: var(--p1);
    border: 2px solid var(--p1);
}
.btn-outline-dark:hover { background: var(--p1); color: var(--white); }

.btn-lg { padding: 1rem 2.4rem; font-size: 1.05rem; }
.btn-sm { padding: .5rem 1.2rem; font-size: .85rem; }

/* ── Card ─────────────────────────────────────────────────── */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    transition: transform .3s, box-shadow .3s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }

/* ── Animations ───────────────────────────────────────────── */
@keyframes fadeUp {
    from { opacity:0; transform:translateY(28px); }
    to   { opacity:1; transform:translateY(0); }
}
@keyframes bgFloat {
    0%,100% { background-position: 0% 50%; }
    50%      { background-position: 100% 50%; }
}
@keyframes floatUpP {
    0%   { transform:translateY(0) scale(1); opacity:.6; }
    100% { transform:translateY(-100vh) scale(.5); opacity:0; }
}
@keyframes heartbeat {
    0%,100% { transform:scale(1); }
    14%     { transform:scale(1.15); }
    28%     { transform:scale(1); }
    42%     { transform:scale(1.1); }
}
@keyframes pulse {
    0%,100% { box-shadow: 0 0 0 0 rgba(124,58,237,.4); }
    70%     { box-shadow: 0 0 0 12px rgba(124,58,237,0); }
}
@keyframes counterUp { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }

.anim-fade-up { animation: fadeUp .65s cubic-bezier(.22,.68,0,1.2) both; }
.anim-delay-1 { animation-delay: .1s; }
.anim-delay-2 { animation-delay: .2s; }
.anim-delay-3 { animation-delay: .3s; }
.anim-delay-4 { animation-delay: .4s; }
.anim-delay-5 { animation-delay: .5s; }
.anim-delay-6 { animation-delay: .6s; }

/* ── Navigation ───────────────────────────────────────────── */
.pub-header {
    position: fixed; top:0; left:0; right:0; z-index:9000;
    height: var(--nav-h);
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(124,58,237,.08);
    transition: box-shadow .3s;
}
.pub-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,.1); }

.pub-nav-inner {
    max-width: 1180px; margin:0 auto;
    padding: 0 1.5rem;
    height: var(--nav-h);
    display: flex; align-items: center; justify-content: space-between;
}

.pub-brand {
    display: flex; align-items: center; gap: .6rem;
    text-decoration: none;
}
.pub-brand-icon {
    width: 38px; height: 38px;
    background: var(--grad);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 1rem;
    animation: heartbeat 2.5s ease-in-out infinite;
}
.pub-brand-name {
    font-size: 1.35rem; font-weight: 800; letter-spacing: -.03em;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pub-nav-links {
    display: flex; align-items: center; gap: 1.75rem;
}
.pub-nav-links a {
    text-decoration: none; font-weight: 500; font-size: .9rem;
    color: var(--muted); transition: color .2s;
}
.pub-nav-links a:hover,
.pub-nav-links a.active { color: var(--p1); }

.pub-btn-nav {
    padding: .45rem 1.2rem !important;
    border-radius: 999px !important;
    font-weight: 700 !important;
    background: transparent;
    border: 2px solid var(--p1);
    color: var(--p1) !important;
    transition: background .2s, color .2s !important;
}
.pub-btn-nav:hover { background: var(--p1) !important; color: var(--white) !important; }
.pub-btn-register {
    background: var(--grad) !important;
    border-color: transparent !important;
    color: var(--white) !important;
}
.pub-btn-register:hover { opacity: .9 !important; transform: translateY(-1px); }

.pub-hamburger {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: .3rem;
}
.pub-hamburger span {
    width: 24px; height: 2.5px;
    background: var(--p1); border-radius: 4px;
    transition: all .3s;
}
.pub-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.pub-hamburger.open span:nth-child(2) { opacity:0; }
.pub-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ── Footer ───────────────────────────────────────────────── */
.pub-footer {
    background: #0f0b2a;
    color: rgba(255,255,255,.75);
    padding: 3.5rem 1.5rem 2rem;
}
.pub-footer-inner {
    max-width: 1180px; margin: 0 auto; text-align: center;
}
.pub-footer .pub-brand-icon { margin: 0 auto .4rem; display: flex; }
.pub-footer-brand {
    display: flex; align-items: center; justify-content: center; gap: .6rem;
    font-size: 1.4rem; font-weight: 800; letter-spacing: -.02em;
    color: var(--white); margin-bottom: .75rem;
}
.pub-footer-tagline { font-size: .88rem; margin-bottom: 1.5rem; }

.pub-footer-links {
    display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.5rem;
    margin-bottom: 1.5rem;
}
.pub-footer-links a {
    color: rgba(255,255,255,.65); text-decoration: none; font-size: .88rem;
    transition: color .2s;
}
.pub-footer-links a:hover { color: #a78bfa; }

.pub-footer-socials {
    display: flex; justify-content: center; gap: .85rem; margin-bottom: 1.75rem;
}
.pub-footer-socials a {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,.9); font-size: 1rem;
    text-decoration: none; transition: background .25s, color .25s, transform .25s;
}
.pub-footer-socials a:hover {
    background: var(--grad); border-color: transparent;
    color: var(--white); transform: translateY(-3px);
}

.pub-footer-copy { font-size: .8rem; opacity: .45; }

/* ── Responsive nav ───────────────────────────────────────── */
@media (max-width: 860px) {
    .pub-hamburger { display: flex; }
    .pub-nav-links {
        display: none; flex-direction: column; align-items: flex-start; gap: 0;
        position: absolute; top: var(--nav-h); left:0; right:0;
        background: rgba(255,255,255,.97); backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border);
        padding: 1rem 1.5rem 1.5rem;
        box-shadow: 0 8px 30px rgba(0,0,0,.1);
    }
    .pub-nav-links.open { display: flex; }
    .pub-nav-links a { padding: .6rem 0; font-size: 1rem; width:100%; border-bottom:1px solid var(--border); }
    .pub-nav-links a:last-child { border-bottom: none; }
    .pub-btn-nav, .pub-btn-register { margin-top: .5rem; display: inline-block; width: auto; }
}

/* ── Page hero (inner pages) ──────────────────────────────── */
.page-hero {
    padding: calc(var(--nav-h) + 4rem) 1.5rem 4rem;
    background: var(--grad);
    background-size: 300% 300%;
    animation: bgFloat 14s ease infinite;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content:'';
    position:absolute; inset:0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,255,255,.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,.08) 0%, transparent 50%);
}
.page-hero .inner { position: relative; z-index:1; max-width:680px; margin:0 auto; }
.page-hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem); font-weight:800;
    letter-spacing:-.03em; margin-bottom:.75rem;
}
.page-hero p { font-size:1.1rem; opacity:.88; }

/* ── Particles canvas ─────────────────────────────────────── */
.pub-particles { position:fixed; inset:0; pointer-events:none; z-index:0; }
.pub-particle {
    position:absolute; border-radius:50%;
    background:rgba(255,255,255,.15);
    animation: floatUpP linear infinite;
}

/* ── Global responsive breakpoints ───────────────────────── */
@media (max-width: 860px) {
    .section { padding: 4rem 1rem; }
    .section-title { font-size: clamp(1.5rem, 5vw, 2.2rem); }
    .container { padding: 0 1rem; }
    .page-hero { padding: calc(var(--nav-h) + 2.5rem) 1rem 2.5rem; }
    .page-hero h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); }
    .page-hero p { font-size: .95rem; }
}

@media (max-width: 600px) {
    :root { --nav-h: 60px; }
    .section { padding: 3rem .75rem; }
    .section-title { font-size: clamp(1.4rem, 6vw, 1.9rem); }
    .section-sub { font-size: .95rem; }
    .btn { padding: .75rem 1.5rem; font-size: .9rem; }
    .btn-lg { padding: .9rem 1.8rem; font-size: .95rem; }
    .container { padding: 0 .75rem; }
    .pub-footer { padding: 2.5rem .75rem 1.5rem; }
    .pub-footer-links { gap: .4rem 1rem; }
}

@media (max-width: 400px) {
    .section { padding: 2.5rem .5rem; }
    .btn-lg { padding: .8rem 1.4rem; font-size: .9rem; }
}