/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', sans-serif;
    color: #1a2a3a;
    background: #f4f8fb;
    overflow-x: hidden;
}

/* === VARIABLES === */
:root {
    --blue-dark: #0a2540;
    --blue-mid: #1565c0;
    --blue-light: #42a5f5;
    --blue-pale: #bbdefb;
    --ice-white: #f4f8fb;
    --white: #ffffff;
    --gold: #ffd54f;
    --accent: #0d47a1;
}

/* === HERO === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0a2540 0%, #1565c0 50%, #42a5f5 100%);
    z-index: 0;
}
.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(66,165,245,0.3) 0%, transparent 50%);
}
/* Animated ice particles */
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 10% 20%, rgba(255,255,255,0.5), transparent),
        radial-gradient(2px 2px at 30% 60%, rgba(255,255,255,0.3), transparent),
        radial-gradient(3px 3px at 50% 10%, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 70% 80%, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 90% 40%, rgba(255,255,255,0.5), transparent),
        radial-gradient(3px 3px at 15% 85%, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 60% 35%, rgba(255,255,255,0.4), transparent);
    animation: drift 20s linear infinite;
}
@keyframes drift {
    0% { transform: translateY(0); }
    100% { transform: translateY(-40px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 2rem;
}
.hero h1 {
    font-size: clamp(2.2rem, 6vw, 4.5rem);
    font-weight: 900;
    color: var(--white);
    letter-spacing: -1px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.tagline {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--blue-pale);
    margin-top: 0.5rem;
    font-weight: 600;
}
.badges {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}
.badge {
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.25);
    color: var(--white);
    padding: 0.5rem 1.1rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
}
.avatar {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--blue-light), var(--gold));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    animation: pulse 3s ease-in-out infinite;
}
.avatar-inner {
    font-size: 3.5rem;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.wave-bottom {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    z-index: 1;
}
.wave-bottom svg { display: block; width: 100%; height: 80px; }

/* === SECTIONS === */
.section {
    padding: 5rem 1.5rem;
}
.container {
    max-width: 900px;
    margin: 0 auto;
}
.section h2 {
    text-align: center;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 900;
    color: var(--blue-dark);
    margin-bottom: 2.5rem;
    position: relative;
}
.section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--blue-mid), var(--blue-light));
    border-radius: 2px;
    margin: 0.6rem auto 0;
}

/* === ABOUT === */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}
.about-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: 0 4px 24px rgba(10,37,64,0.07);
    transition: transform 0.3s, box-shadow 0.3s;
}
.about-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 32px rgba(10,37,64,0.13);
}
.about-icon {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
}
.about-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 0.5rem;
}
.about-card p {
    color: #4a5a6a;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* === STATS === */
.stats {
    background: linear-gradient(135deg, #0a2540, #1565c0);
    color: var(--white);
}
.stats h2 { color: var(--white); }
.stats h2::after { background: var(--gold); }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}
.stat-card {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 16px;
    padding: 2rem 1rem;
    text-align: center;
    backdrop-filter: blur(6px);
}
.stat-number {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--gold);
}
.stat-number::after { content: '+'; font-size: 1.4rem; }
.stat-label {
    margin-top: 0.3rem;
    font-size: 0.95rem;
    color: var(--blue-pale);
    font-weight: 600;
}

/* === SKILLS === */
.skills-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}
.skill-item { }
.skill-name {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
    color: var(--blue-dark);
}
.skill-bar {
    height: 12px;
    background: var(--blue-pale);
    border-radius: 6px;
    overflow: hidden;
}
.skill-fill {
    height: 100%;
    width: 0;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--blue-mid), var(--blue-light));
    transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

/* === SCHEDULE === */
.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.2rem;
}
.schedule-card {
    background: var(--white);
    border-radius: 14px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 4px 20px rgba(10,37,64,0.07);
    border-left: 4px solid var(--blue-light);
    transition: transform 0.3s;
}
.schedule-card:hover { transform: translateY(-4px); }
.schedule-card.accent {
    border-left-color: var(--gold);
    background: linear-gradient(135deg, #fff8e1, #fffde7);
}
.day {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--blue-dark);
    margin-bottom: 0.3rem;
}
.time {
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--blue-mid);
}
.place {
    font-size: 0.85rem;
    color: #6a7a8a;
    margin-top: 0.3rem;
}

/* === CONTACT === */
.contact {
    background: var(--white);
}
.contact-sub {
    text-align: center;
    color: #4a5a6a;
    font-size: 1.05rem;
    margin-top: -1.5rem;
    margin-bottom: 2rem;
}
.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.2rem;
}
.contact-card {
    background: var(--ice-white);
    border-radius: 14px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s;
}
.contact-card:hover { transform: translateY(-4px); }
.contact-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.contact-label { font-size: 0.8rem; color: #6a7a8a; text-transform: uppercase; letter-spacing: 1px; }
.contact-value { font-weight: 700; color: var(--blue-dark); margin-top: 0.2rem; }

/* === FOOTER === */
.footer {
    background: var(--blue-dark);
    color: var(--blue-pale);
    text-align: center;
    padding: 1.5rem;
    font-size: 0.85rem;
}

/* === RESPONSIVE === */
@media (max-width: 600px) {
    .section { padding: 3rem 1rem; }
    .badges { flex-direction: column; align-items: center; }
    .stat-number { font-size: 2rem; }
}

/* === ANIMATIONS (on scroll) === */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}