/* =============================================
   IFA — Modern Premium Layer
   Applied on top of styles.css for a futuristic finance look
   ============================================= */

:root {
    --navy-900: #0a1230;
    --navy-800: #0f1a3d;
    --navy-700: #1a2a5e;
    --navy-600: #2a3d7a;
    --gold-bright: #e6c85a;
    --gold-core: #c9a227;
    --gold-deep: #8a6d0f;
    --ink: #0b1020;
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(201, 162, 39, 0.25);
    --glow-gold: 0 0 0 1px rgba(201, 162, 39, 0.25), 0 10px 40px -10px rgba(201, 162, 39, 0.45);
    --glow-navy: 0 10px 60px -15px rgba(26, 42, 94, 0.55);
    --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
}

/* =============================================
   Global refinements
   ============================================= */
html {
    scroll-behavior: smooth;
}

body {
    background: #fafbfd;
}

/* Modern scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #eef1f7; }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--navy-700), var(--navy-800));
    border-radius: 10px;
    border: 2px solid #eef1f7;
}
::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--gold-core), var(--navy-700));
}

/* Selection */
::selection {
    background: var(--gold-core);
    color: #0a1230;
}

/* =============================================
   Navbar — glass + refined
   ============================================= */
.navbar {
    background: rgba(10, 18, 48, 0.72) !important;
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    border-bottom: 1px solid rgba(201, 162, 39, 0.15);
    box-shadow: 0 8px 32px -12px rgba(10, 18, 48, 0.6) !important;
    transition: all 0.4s var(--ease-out-quint);
}

.navbar.scrolled {
    background: rgba(10, 18, 48, 0.85) !important;
    border-bottom-color: rgba(201, 162, 39, 0.35);
}

.nav-links a {
    position: relative;
    transition: color 0.3s ease;
}

.nav-links > li > a::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-core), var(--gold-bright));
    transition: all 0.35s var(--ease-out-quint);
    transform: translateX(-50%);
    border-radius: 2px;
}

.nav-links > li > a:hover::after {
    width: 70%;
}

.nav-social a {
    transition: all 0.3s ease;
    position: relative;
}

.nav-social a:hover {
    transform: translateY(-2px);
    filter: drop-shadow(0 4px 12px rgba(201, 162, 39, 0.6));
}

/* =============================================
   Hero — immersive, animated
   ============================================= */
.hero {
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    background:
        radial-gradient(ellipse 80% 60% at 20% 30%, rgba(201, 162, 39, 0.22) 0%, transparent 55%),
        radial-gradient(ellipse 70% 50% at 80% 70%, rgba(42, 61, 122, 0.3) 0%, transparent 55%),
        linear-gradient(135deg, rgba(10, 18, 48, 0.55) 0%, rgba(15, 26, 61, 0.35) 50%, rgba(26, 42, 94, 0.55) 100%) !important;
    z-index: 2 !important;
}

.hero-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.06 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    opacity: 0.25;
    pointer-events: none;
    mix-blend-mode: overlay;
}

.hero-content {
    position: relative;
    z-index: 5;
}

.hero-title {
    background: linear-gradient(135deg, #ffffff 0%, #f0e6c0 45%, #e6c85a 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
    animation: heroTitleIn 1s var(--ease-out-quint) both;
}

.hero-subtitle {
    opacity: 0;
    animation: heroFadeIn 1s var(--ease-out-quint) 0.2s both;
}

.hero-buttons {
    opacity: 0;
    animation: heroFadeIn 1s var(--ease-out-quint) 0.4s both;
}

@keyframes heroTitleIn {
    from {
        opacity: 0;
        transform: translateY(30px);
        filter: blur(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-scroll i {
    animation: scrollBounce 2s ease-in-out infinite;
    filter: drop-shadow(0 0 12px rgba(201, 162, 39, 0.6));
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); opacity: 0.6; }
    50% { transform: translateY(8px); opacity: 1; }
}

/* =============================================
   Buttons — premium with shimmer
   ============================================= */
.btn {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    letter-spacing: 0.02em;
    transition: transform 0.3s var(--ease-out-quint), box-shadow 0.3s ease, background 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-core) 0%, var(--gold-bright) 50%, var(--gold-core) 100%) !important;
    background-size: 200% 100% !important;
    color: #0a1230 !important;
    font-weight: 700;
    border: none;
    box-shadow: 0 6px 20px -6px rgba(201, 162, 39, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
    transition: left 0.7s var(--ease-out-quint);
    z-index: -1;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -8px rgba(201, 162, 39, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    background-position: 100% 0 !important;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06) !important;
    backdrop-filter: blur(10px);
    border: 1.5px solid rgba(201, 162, 39, 0.55) !important;
    color: #fff !important;
    transition: all 0.3s var(--ease-out-quint);
}

.btn-secondary:hover {
    background: rgba(201, 162, 39, 0.15) !important;
    border-color: var(--gold-bright) !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 30px -10px rgba(201, 162, 39, 0.55);
}

/* =============================================
   Section headers — modern typography
   ============================================= */
.section-header h2,
section h2 {
    position: relative;
    background: linear-gradient(135deg, var(--navy-800) 0%, var(--navy-700) 50%, var(--gold-deep) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.015em;
}

.newsletter h2,
.stats-section h2,
section.newsletter h2 {
    background: linear-gradient(135deg, #ffffff 0%, #f0e6c0 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.underline {
    background: linear-gradient(90deg, var(--gold-core), var(--gold-bright), var(--gold-core));
    background-size: 200% 100%;
    animation: underlineShimmer 3s ease-in-out infinite;
    height: 3px !important;
    border-radius: 3px;
    box-shadow: 0 0 20px rgba(201, 162, 39, 0.4);
}

@keyframes underlineShimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* =============================================
   Stats section — glowing numbers
   ============================================= */
.stats-section {
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 50%, var(--navy-700) 100%) !important;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    background: radial-gradient(circle at 50% 50%, rgba(201, 162, 39, 0.18) 0%, transparent 60%) !important;
    animation: glowPulse 8s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.stat-item {
    position: relative;
    transition: transform 0.4s var(--ease-out-quint);
}

.stat-item:hover {
    transform: translateY(-4px);
}

.stat-number {
    background: linear-gradient(135deg, #ffffff 0%, #f0e6c0 40%, #c9a227 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 30px rgba(201, 162, 39, 0.35));
    transition: filter 0.3s ease;
}

.stat-item:hover .stat-number {
    filter: drop-shadow(0 0 50px rgba(230, 200, 90, 0.6));
}

/* =============================================
   Newsletter — premium dark
   ============================================= */
.newsletter {
    background:
        radial-gradient(ellipse at 20% 20%, rgba(201, 162, 39, 0.12) 0%, transparent 50%),
        linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 100%) !important;
    position: relative;
    overflow: hidden;
}

.newsletter::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    opacity: 0.4;
    pointer-events: none;
    mix-blend-mode: overlay;
}

.newsletter-form input[type="email"] {
    background: rgba(255, 255, 255, 0.08) !important;
    backdrop-filter: blur(10px);
    border: 1.5px solid rgba(201, 162, 39, 0.3) !important;
    color: #fff !important;
    transition: all 0.3s ease;
}

.newsletter-form input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-form input[type="email"]:focus {
    background: rgba(255, 255, 255, 0.12) !important;
    border-color: var(--gold-bright) !important;
    box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.15);
    outline: none;
}

/* =============================================
   Cards (articles, events, team, membership) — glass
   ============================================= */
.membership-card,
.article-card,
.event-card,
.team-card,
.tl-content,
.about-card {
    position: relative;
    transition: transform 0.5s var(--ease-out-quint), box-shadow 0.5s ease, border-color 0.4s ease;
    border: 1px solid rgba(26, 42, 94, 0.08);
}

.membership-card::before,
.article-card::before,
.event-card::before,
.team-card::before,
.about-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: linear-gradient(135deg, transparent 30%, rgba(201, 162, 39, 0.6) 50%, transparent 70%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.membership-card:hover,
.article-card:hover,
.event-card:hover,
.team-card:hover,
.about-card:hover,
.tl-content:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px -15px rgba(10, 18, 48, 0.25), 0 0 0 1px rgba(201, 162, 39, 0.15);
}

.membership-card:hover::before,
.article-card:hover::before,
.event-card:hover::before,
.team-card:hover::before,
.about-card:hover::before {
    opacity: 1;
}

.membership-icon {
    background: linear-gradient(135deg, var(--navy-700), var(--navy-800)) !important;
    box-shadow: 0 10px 30px -8px rgba(26, 42, 94, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
}

.membership-icon::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent, rgba(201, 162, 39, 0.6), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    animation: spin 4s linear infinite;
}

.membership-card:hover .membership-icon::after {
    opacity: 1;
}

.about-card i {
    color: var(--gold-bright) !important;
    filter: drop-shadow(0 0 20px rgba(201, 162, 39, 0.5));
    transition: filter 0.4s ease, transform 0.4s var(--ease-out-quint);
}

.about-card:hover i {
    transform: translateY(-4px) scale(1.05);
    filter: drop-shadow(0 0 35px rgba(230, 200, 90, 0.7));
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* =============================================
   Section dividers — subtle gradient lines
   ============================================= */
section + section {
    position: relative;
}

/* =============================================
   Forms (contact, adhesion) refinements
   ============================================= */
.form-group input,
.form-group textarea,
.form-group select,
.membership-form input,
.membership-form textarea,
.membership-form select {
    transition: all 0.3s ease;
    border: 1.5px solid rgba(26, 42, 94, 0.12) !important;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
.membership-form input:focus,
.membership-form textarea:focus,
.membership-form select:focus {
    border-color: var(--gold-core) !important;
    box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.12) !important;
    outline: none;
}

/* =============================================
   Footer — premium dark
   ============================================= */
.footer {
    background: linear-gradient(180deg, var(--navy-900) 0%, var(--ink) 100%) !important;
    position: relative;
    border-top: 1px solid rgba(201, 162, 39, 0.2);
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-core), transparent);
}

.footer a {
    transition: color 0.3s ease, transform 0.3s ease;
    display: inline-block;
}

.footer a:hover {
    color: var(--gold-bright) !important;
    transform: translateX(3px);
}

/* =============================================
   Scroll reveal animations
   ============================================= */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s var(--ease-out-quint), transform 0.9s var(--ease-out-quint);
    will-change: opacity, transform;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out-quint), transform 0.8s var(--ease-out-quint);
}

.reveal-stagger.is-visible > * {
    opacity: 1;
    transform: translateY(0);
}

.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.15s; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.25s; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.35s; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.45s; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.55s; }

@media (prefers-reduced-motion: reduce) {
    .reveal, .reveal-stagger > * {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
    .hero-title, .hero-subtitle, .hero-buttons {
        animation: none !important;
        opacity: 1 !important;
    }
}

/* =============================================
   Scroll-to-top button — premium
   ============================================= */
.scroll-to-top {
    background: linear-gradient(135deg, var(--gold-core), var(--gold-bright)) !important;
    color: #0a1230 !important;
    box-shadow: 0 8px 28px -8px rgba(201, 162, 39, 0.6) !important;
    transition: all 0.4s var(--ease-out-quint) !important;
    border: 1.5px solid rgba(255, 255, 255, 0.25) !important;
}

.scroll-to-top:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 14px 40px -10px rgba(201, 162, 39, 0.85) !important;
}

/* =============================================
   Timeline / events refinements
   ============================================= */
.tl-badge {
    font-weight: 600;
    letter-spacing: 0.03em;
}

.tl-btn {
    background: linear-gradient(135deg, var(--navy-700), var(--navy-800)) !important;
    box-shadow: 0 6px 18px -6px rgba(26, 42, 94, 0.5);
}

.tl-btn:hover {
    background: linear-gradient(135deg, var(--gold-core), var(--gold-bright)) !important;
    color: #0a1230 !important;
    box-shadow: 0 10px 28px -8px rgba(201, 162, 39, 0.6) !important;
}

/* =============================================
   Page hero (sub-pages) — consistent premium look
   ============================================= */
.page-hero,
.partenaires-hero,
.soutenir-hero,
.evenements-hero,
.intervenant-hero {
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 50%, var(--navy-800) 100%) !important;
    position: relative;
    overflow: hidden;
}

.page-hero::before,
.partenaires-hero::before,
.soutenir-hero::before,
.evenements-hero::before,
.intervenant-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 40% at 30% 40%, rgba(201, 162, 39, 0.2) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 70% 60%, rgba(42, 61, 122, 0.4) 0%, transparent 60%);
    pointer-events: none;
}

/* =============================================
   Utilities
   ============================================= */
.gradient-text {
    background: linear-gradient(135deg, var(--navy-700), var(--gold-core));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.glow-gold { box-shadow: var(--glow-gold); }
.glow-navy { box-shadow: var(--glow-navy); }