/* ============================================
   RISKAICENTER — Alpine Finance Aesthetic
   Dark mountain base · Ice blue accents · Editorial type
   ============================================ */

:root {
    --black: #080c10;
    --deep: #0d1520;
    --slate: #1a2535;
    --mid: #2a3a52;
    --ice: #a8d4f5;
    --glacier: #5ba8e0;
    --snow: #e8f4ff;
    --white: #f0f6ff;
    --gold: #c8a96e;
    --gold-light: #e8c98e;
    --text: #c0cfe0;
    --text-dim: #6a7f96;
    --danger: #e05050;

    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Cormorant Garamond', serif;
    --font-mono: 'JetBrains Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    background: var(--black);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 21px;
    line-height: 1.7;
    overflow-x: hidden;
}

/* ---- NAV ---- */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 3rem;
    background: rgba(8, 12, 16, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(168, 212, 245, 0.1);
}
.nav-logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    letter-spacing: 0.05em;
    text-decoration: none;
}
.logo-risk { color: var(--ice); }
.logo-center { color: var(--white); }
.logo-ai { color: var(--gold); }

.nav-links { display: flex; align-items: center; gap: 2.5rem; }
.nav-link {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.2s;
}
.nav-link:hover, .nav-link.active { color: var(--ice); }
.nav-cta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.6rem 1.4rem;
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-decoration: none;
    transition: all 0.2s;
}
.nav-cta:hover { background: var(--gold); color: var(--black); }
.nav-hamburger { display: none; background: none; border: none; color: var(--white); font-size: 1.4rem; cursor: pointer; }

/* ---- HERO ---- */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column; justify-content: center; align-items: flex-start;
    padding: 8rem 3rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 70% 40%, rgba(91, 168, 224, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 80%, rgba(200, 169, 110, 0.08) 0%, transparent 50%),
        linear-gradient(160deg, #080c10 0%, #0d1520 50%, #080c10 100%);
    z-index: 0;
}

/* Mountain silhouette SVG background */
.hero-mountain {
    position: absolute; bottom: 0; left: 0; right: 0;
    height: 55%;
    z-index: 0;
    opacity: 0.18;
}

.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(168, 212, 245, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(168, 212, 245, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    z-index: 0;
}

.hero-content { position: relative; z-index: 1; max-width: 900px; }

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.8s 0.2s forwards;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 10vw, 9rem);
    line-height: 0.92;
    letter-spacing: 0.02em;
    color: var(--white);
    margin-bottom: 0.5rem;
    opacity: 0;
    animation: fadeUp 0.8s 0.4s forwards;
}
.hero-title .accent { color: var(--ice); display: block; }
.hero-title .accent2 { color: var(--gold); font-size: 0.75em; display: block; }

.hero-subtitle {
    font-size: 1.3rem;
    font-style: italic;
    color: var(--text);
    max-width: 560px;
    margin: 2rem 0 3rem;
    opacity: 0;
    animation: fadeUp 0.8s 0.6s forwards;
}

.hero-actions {
    display: flex; gap: 1.2rem; flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.8s 0.8s forwards;
}
.btn-primary {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 1rem 2.5rem;
    background: var(--glacier);
    color: var(--black);
    text-decoration: none;
    font-weight: 400;
    transition: all 0.25s;
    position: relative;
    overflow: hidden;
}
.btn-primary::after {
    content: '';
    position: absolute; inset: 0;
    background: var(--ice);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.25s;
    z-index: -1;
}
.btn-primary:hover { background: var(--ice); }
.btn-secondary {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 1rem 2.5rem;
    border: 1px solid rgba(168,212,245,0.3);
    color: var(--ice);
    text-decoration: none;
    transition: all 0.25s;
}
.btn-secondary:hover { border-color: var(--ice); background: rgba(168,212,245,0.05); }

.hero-stats {
    position: absolute;
    right: 4rem; bottom: 6rem;
    display: flex; flex-direction: column; gap: 2rem;
    z-index: 1;
    opacity: 0;
    animation: fadeIn 1s 1.2s forwards;
}
.stat-item { text-align: right; }
.stat-num {
    font-family: var(--font-display);
    font-size: 3.5rem;
    line-height: 1;
    color: var(--ice);
}
.stat-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
}

/* ---- SECTIONS ---- */
section { padding: 7rem 3rem; }
.section-inner { max-width: 1200px; margin: 0 auto; }

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1;
    color: var(--white);
    letter-spacing: 0.02em;
    margin-bottom: 1.5rem;
}

.section-lead {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--text);
    max-width: 680px;
    line-height: 1.8;
}

/* ---- CONFERENCE BANNER ---- */
.conf-banner {
    background: var(--deep);
    border-top: 1px solid rgba(168,212,245,0.1);
    border-bottom: 1px solid rgba(168,212,245,0.1);
    padding: 5rem 3rem;
    position: relative;
    overflow: hidden;
}
.conf-banner::before {
    content: 'GORE MTN';
    position: absolute;
    right: -2rem; top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-display);
    font-size: 16rem;
    color: rgba(168,212,245,0.03);
    white-space: nowrap;
    pointer-events: none;
}
.conf-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.conf-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 0.35rem 0.9rem;
    background: rgba(200,169,110,0.15);
    color: var(--gold);
    border: 1px solid rgba(200,169,110,0.3);
    margin-bottom: 1.5rem;
}
.conf-title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 5vw, 5rem);
    line-height: 0.95;
    color: var(--white);
    margin-bottom: 1rem;
}
.conf-title em { color: var(--glacier); font-style: normal; }
.conf-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}
.conf-desc {
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}
.conf-details { display: flex; flex-direction: column; gap: 1.5rem; }
.conf-detail {
    display: flex; gap: 1.5rem; align-items: flex-start;
    padding: 1.5rem;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(168,212,245,0.08);
    position: relative;
    overflow: hidden;
    transition: border-color 0.2s;
}
.conf-detail:hover { border-color: rgba(168,212,245,0.25); }
.conf-detail-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 40px; text-align: center;
    margin-top: 0.2rem;
}
.conf-detail-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ice);
    margin-bottom: 0.3rem;
}
.conf-detail-text { font-size: 1rem; color: var(--text); }

/* ---- TRACKS GRID ---- */
.tracks { background: var(--black); }
.tracks-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5px;
    margin-top: 4rem;
    background: rgba(168,212,245,0.08);
    border: 1px solid rgba(168,212,245,0.08);
}
.track-card {
    background: var(--black);
    padding: 3rem 2.5rem;
    transition: background 0.25s;
    position: relative;
    overflow: hidden;
}
.track-card:hover { background: var(--deep); }
.track-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--glacier), transparent);
    transform: scaleX(0);
    transition: transform 0.4s;
}
.track-card:hover::before { transform: scaleX(1); }
.track-num {
    font-family: var(--font-display);
    font-size: 4rem;
    color: rgba(168,212,245,0.08);
    line-height: 1;
    margin-bottom: 1rem;
}
.track-title {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--white);
    letter-spacing: 0.03em;
    margin-bottom: 1rem;
}
.track-desc { font-size: 0.95rem; color: var(--text-dim); line-height: 1.7; }

/* ---- LEGACY STRIP ---- */
.legacy {
    background: linear-gradient(135deg, #0d1520 0%, #1a2535 100%);
    border-top: 1px solid rgba(200,169,110,0.15);
    border-bottom: 1px solid rgba(200,169,110,0.15);
}
.legacy-inner { max-width: 1200px; margin: 0 auto; }
.legacy-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    color: var(--white); margin-bottom: 1rem;
}
.legacy-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 2rem; margin-top: 3rem;
}
.legacy-stat {
    padding: 2rem;
    border: 1px solid rgba(200,169,110,0.15);
    text-align: center;
    position: relative;
}
.legacy-stat-num {
    font-family: var(--font-display);
    font-size: 3.5rem;
    color: var(--gold);
    line-height: 1;
    display: block;
}
.legacy-stat-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-top: 0.5rem;
    display: block;
}

/* ---- SPEAKERS PLACEHOLDER ---- */
.speakers { background: var(--deep); }
.speakers-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 2rem; margin-top: 4rem;
}
.speaker-card {
    position: relative;
    border: 1px solid rgba(168,212,245,0.1);
    overflow: hidden;
    transition: border-color 0.2s;
}
.speaker-card:hover { border-color: rgba(168,212,245,0.35); }
.speaker-avatar {
    width: 100%; aspect-ratio: 1;
    background: linear-gradient(135deg, var(--slate), var(--mid));
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display);
    font-size: 4rem;
    color: rgba(168,212,245,0.2);
}
.speaker-info { padding: 1.2rem 1.5rem; }
.speaker-name {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--white);
    letter-spacing: 0.03em;
}
.speaker-role {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--glacier);
    margin-top: 0.3rem;
}
.speaker-org {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-top: 0.2rem;
}

/* ---- RESEARCH ---- */
.research { background: var(--black); }
.research-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 2rem; margin-top: 4rem;
}
.paper-card {
    padding: 2.5rem;
    border: 1px solid rgba(168,212,245,0.08);
    position: relative;
    transition: all 0.2s;
    cursor: pointer;
}
.paper-card:hover { border-color: rgba(168,212,245,0.3); background: rgba(168,212,245,0.03); }
.paper-tag {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1rem;
}
.paper-title {
    font-size: 1.15rem;
    color: var(--white);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.8rem;
}
.paper-excerpt { font-size: 0.95rem; color: var(--text-dim); line-height: 1.7; }
.paper-authors {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--glacier);
    margin-top: 1.5rem;
    text-transform: uppercase;
}

/* ---- ABOUT ---- */
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 6rem; align-items: start;
    margin-top: 4rem;
}
.about-text p { margin-bottom: 1.5rem; font-size: 1.05rem; line-height: 1.9; }
.about-text p:first-of-type { font-size: 1.2rem; font-style: italic; color: var(--snow); }
.values-list { display: flex; flex-direction: column; gap: 1.5rem; }
.value-item {
    padding: 1.5rem;
    border-left: 2px solid var(--glacier);
    padding-left: 2rem;
}
.value-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--white);
    letter-spacing: 0.04em;
}
.value-text { font-size: 0.95rem; color: var(--text-dim); margin-top: 0.4rem; }

/* ---- REGISTER CTA ---- */
.cta-section {
    background: var(--deep);
    text-align: center;
    padding: 8rem 3rem;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(91,168,224,0.15) 0%, transparent 60%);
}
.cta-inner { position: relative; z-index: 1; }
.cta-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 7vw, 6rem);
    color: var(--white);
    line-height: 0.95;
    margin-bottom: 1.5rem;
}
.cta-title .line2 { color: var(--ice); display: block; }
.cta-sub { font-size: 1.15rem; font-style: italic; color: var(--text); max-width: 500px; margin: 0 auto 3rem; }
.cta-form { display: flex; gap: 1rem; justify-content: center; max-width: 480px; margin: 0 auto; }
.cta-input {
    flex: 1;
    padding: 0.9rem 1.2rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(168,212,245,0.2);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}
.cta-input::placeholder { color: var(--text-dim); }
.cta-input:focus { border-color: var(--glacier); }
.cta-submit {
    padding: 0.9rem 2rem;
    background: var(--glacier);
    border: none;
    color: var(--black);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s;
}
.cta-submit:hover { background: var(--ice); }

/* ---- FOOTER ---- */
.footer {
    background: var(--black);
    border-top: 1px solid rgba(168,212,245,0.08);
    padding: 3rem;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-logo {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--white);
    letter-spacing: 0.05em;
}
.footer-logo span { color: var(--gold); }
.footer-tagline { font-size: 0.9rem; color: var(--text-dim); margin-top: 0.5rem; }
.footer-links { display: flex; gap: 2rem; margin: 2rem 0; }
.footer-links a {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--ice); }
.footer-bottom { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid rgba(168,212,245,0.06); }

/* ---- UTILS ---- */
.mono { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; }
.divider { width: 60px; height: 1px; background: var(--glacier); margin: 2rem 0; }

/* ---- ANIMATIONS ---- */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s, transform 0.7s;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---- PAGE HERO VARIANT ---- */
.page-hero {
    padding: 10rem 3rem 5rem;
    background: var(--deep);
    border-bottom: 1px solid rgba(168,212,245,0.08);
    position: relative;
    overflow: hidden;
}
.page-hero::after {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 80% 50%, rgba(91,168,224,0.08) 0%, transparent 60%);
    pointer-events: none;
}
.page-hero-inner { max-width: 1200px; margin: 0 auto; position: relative; z-index: 1; }
.page-hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 7vw, 7rem);
    color: var(--white);
    line-height: 0.92;
    letter-spacing: 0.02em;
}

/* ---- SNOWFLAKE DECORATION ---- */
.snowflakes {
    position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0;
}
.flake {
    position: absolute;
    color: rgba(168,212,245,0.3);
    font-size: 1rem;
    animation: snowfall linear infinite;
}
@keyframes snowfall {
    0% { transform: translateY(-20px) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 0.5; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .tracks-grid { grid-template-columns: 1fr 1fr; }
    .legacy-grid { grid-template-columns: 1fr 1fr; }
    .speakers-grid { grid-template-columns: 1fr 1fr; }
    .conf-inner { grid-template-columns: 1fr; gap: 3rem; }
    .research-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
}
@media (max-width: 768px) {
    .nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    .nav-links.open { display: flex; flex-direction: column; position: fixed; inset: 0; top: 64px; background: var(--deep); align-items: center; justify-content: center; gap: 2rem; }
    .nav-hamburger { display: block; }
    section { padding: 4rem 1.5rem; }
    .hero { padding: 7rem 1.5rem 3rem; }
    .hero-stats { position: static; flex-direction: row; flex-wrap: wrap; gap: 1.5rem; margin-top: 3rem; }
    .stat-item { text-align: left; }
    .tracks-grid { grid-template-columns: 1fr; }
    .legacy-grid { grid-template-columns: 1fr 1fr; }
    .speakers-grid { grid-template-columns: 1fr 1fr; }
    .cta-form { flex-direction: column; }
    .conf-banner { padding: 3rem 1.5rem; }
}

/* ---- INTEREST FORM FEEDBACK ---- */
.cta-feedback {
    min-height: 1.5rem;
    margin-top: 0.9rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-align: center;
    transition: opacity 0.3s;
}
.cta-feedback.success { color: var(--glacier); }
.cta-feedback.error   { color: var(--danger); }

.cta-input.invalid { border-color: var(--danger); }
.cta-input.valid   { border-color: var(--glacier); }

.cta-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}