/* ============================
   YAVUZ YÜKSEL — EPIC PORTFOLIO
   Deep space + gold cinematic
   ============================ */

:root {
    --black: #0a0a0f;
    --gold: #d4a853;
    --gold-light: #f0d78c;
    --gold-dark: #8b6914;
    --white: #f5f2eb;
    --gray: #6b6b7b;
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background: var(--black);
    color: var(--white);
    font-family: var(--font-body);
    overflow-x: hidden;
    line-height: 1.6;
}

/* PRELOADER */
#preloader {
    position: fixed;
    inset: 0;
    background: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-text {
    text-align: center;
}

.preloader-label {
    display: block;
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--gold);
    margin-bottom: 2rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.preloader-bar {
    width: 300px;
    height: 2px;
    background: rgba(212, 168, 83, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto 1rem;
}

.preloader-fill {
    width: 0%;
    height: 100%;
    background: var(--gold);
    transition: width 0.1s linear;
}

.preloader-percent {
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--gray);
    letter-spacing: 0.1em;
}

/* PARTICLES */
#particles-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

/* CURSOR GLOW */
#cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease-out;
}

/* SECTIONS */
.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    padding: 4rem 2rem;
}

.section-inner {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--gold);
    text-align: center;
    margin-bottom: 4rem;
    letter-spacing: -0.02em;
}

/* HERO */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-content {
    position: relative;
    z-index: 3;
}

/* HERO AVATAR */
.hero-avatar {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto 3rem;
}

.hero-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    position: relative;
    z-index: 2;
    border: 2px solid var(--gold);
}

.avatar-ring {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 1px solid rgba(212, 168, 83, 0.4);
    animation: ringPulse 3s ease-in-out infinite;
}

.avatar-ring-2 {
    inset: -18px;
    border-color: rgba(212, 168, 83, 0.2);
    animation-delay: 1.5s;
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.5; }
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1;
    letter-spacing: -0.03em;
    margin-bottom: 2rem;
    overflow: hidden;
}

.hero-name .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%) rotateX(-90deg);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-name .char.visible {
    opacity: 1;
    transform: translateY(0) rotateX(0deg);
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    color: var(--gold);
    opacity: 0;
    transform: translateY(20px);
    transition: all 1s ease 1.5s;
    max-width: 40ch;
    margin: 0 auto;
    letter-spacing: 0.02em;
}

.hero-subtitle.visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    opacity: 0;
    animation: fadeInHint 1s ease 2.5s forwards;
    z-index: 4;
}

@keyframes fadeInHint {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.hero-scroll-hint span {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.scroll-chevron {
    display: block;
    margin: 0.75rem auto 0;
    color: var(--gold);
    animation: chevronBounce 2s ease infinite;
}

@keyframes chevronBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 1; }
    30% { transform: translateY(6px); opacity: 0.6; }
}

/* INTRO QUOTE */
.epic-quote {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--white);
    text-align: center;
    line-height: 1.4;
    max-width: 30ch;
    margin: 0 auto 2rem;
    font-style: italic;
}

.quote-source {
    text-align: center;
    color: var(--gold);
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 0.1em;
}

/* SWIMMER SECTION */
.swimmer-section {
    min-height: auto;
    padding: 6rem 2rem;
}

.swimmer-pool {
    position: relative;
    width: 100%;
    max-width: 800px;
    height: 200px;
    margin: 0 auto;
    background: #31C0FF;
    border-radius: 6px;
    overflow: hidden;
}

.pool-surface {
    display: none;
}

.pool-lane-markers {
    display: none;
}

#swimmer {
    position: absolute;
    top: 0;
    left: -200px;
    width: 200px;
    height: 200px;
    animation: swimLap 12s linear infinite;
}

.swimmer-gif {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transform: rotate(90deg);
}

@keyframes swimLap {
    0% {
        left: -200px;
    }
    100% {
        left: calc(100% + 10px);
    }
}

.swimmer-caption {
    text-align: center;
    margin-top: 2.5rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--gray);
    letter-spacing: 0.02em;
}

/* BORSA */
.borsa-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.borsa-chart {
    position: relative;
}

.chart-svg {
    width: 100%;
    height: auto;
    display: block;
}

.chart-line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    transition: stroke-dashoffset 2s ease;
}

.borsa-chart.revealed .chart-line {
    stroke-dashoffset: 0;
}

.chart-area {
    opacity: 0;
    transition: opacity 1.5s ease 0.5s;
}

.borsa-chart.revealed .chart-area {
    opacity: 1;
}

.chart-dot {
    opacity: 0;
    transition: opacity 0.3s ease 2s;
}

.borsa-chart.revealed .chart-dot {
    opacity: 1;
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { r: 5; }
    50% { r: 8; }
}

.chart-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(212, 168, 83, 0.15);
}

.chart-label-text {
    font-size: 0.8rem;
    color: var(--gray);
    letter-spacing: 0.05em;
}

.chart-label-gain {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 900;
    color: #4ade80;
}

.borsa-facts {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.borsa-fact {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    border: 1px solid rgba(212, 168, 83, 0.1);
    border-radius: 4px;
    transition: border-color 0.3s ease;
}

.borsa-fact:hover {
    border-color: var(--gold);
}

.borsa-fact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.borsa-fact p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* STATS */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.stat-card {
    text-align: center;
    padding: 3rem 2rem;
    border: 1px solid rgba(212, 168, 83, 0.2);
    border-radius: 4px;
    background: rgba(212, 168, 83, 0.03);
    transition: border-color 0.3s ease, background 0.3s ease;
}

.stat-card:hover {
    border-color: var(--gold);
    background: rgba(212, 168, 83, 0.08);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 900;
    color: var(--gold);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.stat-sub {
    font-size: 0.8rem;
    color: var(--gray);
    font-style: italic;
}

/* TIMELINE */
.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--gold), transparent);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 4rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
    text-align: right;
    padding-right: calc(50% + 2rem);
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    text-align: left;
    padding-left: calc(50% + 2rem);
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gold);
    transform: translateX(-50%);
    box-shadow: 0 0 20px rgba(212, 168, 83, 0.5);
}

.timeline-year {
    font-family: var(--font-display);
    font-size: 0.875rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 35ch;
}

.timeline-item:nth-child(odd) .timeline-content p {
    margin-left: auto;
}

/* SKILLS */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.skill-item {
    padding: 2.5rem;
    border: 1px solid rgba(212, 168, 83, 0.15);
    border-radius: 4px;
    background: rgba(10, 10, 15, 0.8);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-4px);
    border-color: var(--gold);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.skill-item h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 0.75rem;
}

.skill-item p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.skill-bar {
    width: 100%;
    height: 3px;
    background: rgba(212, 168, 83, 0.15);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.skill-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-light));
    border-radius: 3px;
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-level {
    font-size: 0.75rem;
    color: var(--gold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* TESTIMONIALS */
.testimonials-carousel {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.testimonial {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    pointer-events: none;
}

.testimonial.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.testimonial-text {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: 700;
    font-style: italic;
    color: var(--white);
    line-height: 1.5;
    margin-bottom: 1.5rem;
    max-width: 30ch;
}

.testimonial-author {
    color: var(--gold);
    font-size: 0.9rem;
    font-weight: 300;
    letter-spacing: 0.05em;
}

.testimonial-dots {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    position: absolute;
    bottom: -3rem;
    left: 50%;
    transform: translateX(-50%);
}

.testimonial-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(212, 168, 83, 0.3);
    cursor: pointer;
    transition: background 0.3s ease, transform 0.3s ease;
}

.testimonial-dots .dot.active {
    background: var(--gold);
    transform: scale(1.3);
}

/* PHILOSOPHY */
.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.philosophy-card {
    padding: 3rem;
    border: 1px solid rgba(212, 168, 83, 0.1);
    border-radius: 4px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.philosophy-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.philosophy-card:hover::before {
    opacity: 1;
}

.philosophy-number {
    display: block;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(212, 168, 83, 0.2);
    margin-bottom: 1.5rem;
}

.philosophy-card p {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    font-style: italic;
    color: var(--white);
    line-height: 1.6;
    max-width: 25ch;
    margin: 0 auto;
}

/* CONTACT */
#contact {
    text-align: center;
}

.contact-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 3rem;
    max-width: 35ch;
    margin-left: auto;
    margin-right: auto;
}

.contact-options {
    margin-bottom: 2rem;
}

.contact-btn {
    display: inline-block;
    padding: 1.25rem 3rem;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gold);
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.contact-btn span {
    position: relative;
    z-index: 1;
}

.contact-btn:hover {
    color: var(--black);
}

.contact-btn:hover::before {
    transform: translateY(0);
}

.contact-warning {
    font-size: 0.8rem;
    color: var(--gray);
    font-style: italic;
}

/* FOOTER */
.footer {
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(212, 168, 83, 0.1);
    position: relative;
    z-index: 2;
}

.footer-text {
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.footer-disclaimer {
    font-size: 0.75rem;
    color: rgba(107, 107, 123, 0.6);
    font-style: italic;
}

/* REVEAL ANIMATIONS */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-up {
    transform: translateY(40px);
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-up.revealed,
.reveal-left.revealed,
.reveal-right.revealed {
    opacity: 1;
    transform: translate(0, 0);
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .hero-name .char {
        opacity: 1;
        transform: none;
    }

    .hero-subtitle {
        opacity: 1;
        transform: none;
    }

    .reveal-up, .reveal-left, .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .section {
        padding: 3rem 1.5rem;
    }

    .timeline::before {
        left: 1rem;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        flex-direction: column;
        text-align: left;
        padding-left: 3rem;
        padding-right: 0;
    }

    .timeline-item::after {
        left: 1rem;
    }

    .timeline-item:nth-child(odd) .timeline-content p {
        margin-left: 0;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .stat-card {
        padding: 2rem 1rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .skills-container {
        grid-template-columns: 1fr;
    }

    .philosophy-grid {
        grid-template-columns: 1fr;
    }

    .borsa-content {
        grid-template-columns: 1fr;
    }

    .hero-avatar {
        width: 140px;
        height: 140px;
        margin-bottom: 2rem;
    }

    #swimmer {
        width: 90px;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: clamp(2.5rem, 15vw, 4rem);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .hero-avatar {
        width: 120px;
        height: 120px;
    }
}