/* ===================================================
   CLARK GALLOWAY - MODERN WEBSITE STYLES
   =================================================== */

/* --- CSS CUSTOM PROPERTIES (Design Tokens) --- */
:root {
    --color-primary: #fff700;
    --color-primary-hover: #ffff4d;
    --color-bg-dark: #0a0a0a;
    --color-bg-card: #1a1a1a;
    --color-bg-card-hover: #242424;
    --color-text: #ffffff;
    --color-text-muted: #b0b0b0;
    --color-border: rgba(255, 247, 0, 0.3);
    --color-glass: rgba(20, 20, 20, 0.8);
    --color-glass-border: rgba(255, 255, 255, 0.1);

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(255, 247, 0, 0.2);

    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

/* --- RESET & BASE --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: var(--font-primary);
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a1a2e 50%, #16213e 100%);
    background-attachment: fixed;
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- SKIP TO CONTENT (Accessibility) --- */
.skip-to-content {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 10000;
    padding: 1rem 2rem;
    background: var(--color-primary);
    color: var(--color-bg-dark);
    font-weight: 600;
    text-decoration: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.skip-to-content:focus {
    left: 50%;
    transform: translateX(-50%);
}

/* --- NAVIGATION HEADER --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    background: var(--color-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-glass-border);
    transition: all var(--transition-medium);
}

.site-header.scrolled {
    padding: 0.75rem 2rem;
    background: rgba(10, 10, 10, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: all var(--transition-fast);
}

.nav-logo:hover {
    text-shadow: var(--shadow-glow);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-medium);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 70%;
        max-width: 300px;
        flex-direction: column;
        background: var(--color-bg-card);
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        transition: right var(--transition-medium);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-links a {
        font-size: 1.1rem;
    }
}

/* --- MAIN CONTENT --- */
main {
    flex: 1;
    padding-top: 80px;
    /* Account for fixed header */
}

#main-content {
    min-height: calc(100vh - 80px);
}

/* --- CARD STYLES --- */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-glass-border);
    transition: all var(--transition-medium);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border);
}

/* Homepage Card */
.homepage-card {
    max-width: 1000px;
    width: 90%;
    margin: 3rem auto;
    padding: 4rem;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.homepage-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: url('images/meposing.png') no-repeat right center;
    background-size: contain;
    opacity: 0.8;
    pointer-events: none;
}

.homepage-title {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 1rem;
    color: var(--color-primary);
    line-height: 1.1;
}

.homepage-desc {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    max-width: 500px;
}

.homepage-desc b {
    color: var(--color-text);
}

/* Rotating Text Animation */
.rotating-text-container {
    height: 2rem;
    overflow: hidden;
    margin: 1.5rem 0;
}

.rotating-text {
    display: block;
    animation: rotateText 10s infinite;
    color: var(--color-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

@keyframes rotateText {

    0%,
    18% {
        transform: translateY(0);
    }

    20%,
    38% {
        transform: translateY(-2rem);
    }

    40%,
    58% {
        transform: translateY(-4rem);
    }

    60%,
    78% {
        transform: translateY(-6rem);
    }

    80%,
    98% {
        transform: translateY(-8rem);
    }

    100% {
        transform: translateY(0);
    }
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg-dark);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-glass-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* --- ABOUT PAGE --- */
.about-card {
    max-width: 700px;
    width: 90%;
    margin: 3rem auto;
    padding: 3rem;
    text-align: center;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.about-avatar {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-primary);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md), 0 0 30px rgba(255, 247, 0, 0.2);
    transition: all var(--transition-medium);
}

.about-avatar:hover {
    transform: scale(1.05);
}

.about-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.about-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.about-desc {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    text-align: left;
    line-height: 1.8;
}

.about-desc .highlight {
    color: var(--color-primary);
    font-weight: 600;
}

/* --- CONTACT PAGE --- */
.contact-card {
    max-width: 600px;
    width: 90%;
    margin: 3rem auto;
    padding: 3rem;
    text-align: center;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.contact-desc {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-glass-border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 247, 0, 0.1);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

.contact-form button {
    margin-top: 0.5rem;
}

/* --- PORTFOLIO PAGE --- */
.portfolio-card {
    max-width: 900px;
    width: 90%;
    margin: 3rem auto;
    padding: 3rem;
    background: transparent;
    border-radius: var(--radius-lg);
}

.portfolio-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.portfolio-list {
    list-style: none;
    display: grid;
    gap: 1.5rem;
}

.portfolio-item {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    border: 1px solid var(--color-glass-border);
    transition: all var(--transition-medium);
}

.portfolio-item:hover {
    transform: translateY(-4px);
    border-color: var(--color-border);
    box-shadow: var(--shadow-md);
}

.portfolio-item-title {
    font-size: 1.3rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.portfolio-item-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.portfolio-item-desc p {
    margin-bottom: 0.5rem;
}

.portfolio-item-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.portfolio-item-link:hover {
    color: var(--color-primary);
    gap: 0.75rem;
}

.portfolio-item-link::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.portfolio-item-link:hover::after {
    transform: translateX(4px);
}

/* --- FOOTER --- */
#site-footer {
    background: var(--color-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-glass-border);
    padding: 2rem 1rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-glass-border);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.footer-social img {
    width: 20px;
    height: 20px;
    filter: brightness(0.8);
    transition: filter var(--transition-fast);
}

.footer-social a:hover img {
    filter: brightness(0) invert(0);
}

.footer-copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.4);
}

/* --- 404 PAGE --- */
.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
    text-align: center;
    padding: 2rem;
}

.error-code {
    font-size: 8rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 1rem;
}

.error-title {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.error-desc {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    max-width: 400px;
}

/* --- FADE TRANSITIONS --- */
#fade-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--color-bg-dark);
    opacity: 0;
    pointer-events: none;
    z-index: 9999;
    transition: opacity var(--transition-slow);
}

body.fade-out #fade-overlay {
    opacity: 1;
    pointer-events: auto;
}

body.fade-in #fade-overlay {
    opacity: 0;
    pointer-events: none;
}

/* --- UTILITY CLASSES --- */
.text-primary {
    color: var(--color-primary);
}

.text-muted {
    color: var(--color-text-muted);
}

.font-mono {
    font-family: var(--font-mono);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .homepage-card {
        padding: 2rem;
    }

    .homepage-card::before {
        opacity: 0.3;
        width: 60%;
    }

    .homepage-title {
        font-size: 2.5rem;
    }

    .about-card,
    .contact-card,
    .portfolio-card {
        padding: 2rem 1.5rem;
        margin: 2rem auto;
    }

    .about-title,
    .portfolio-title {
        font-size: 2rem;
    }

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

@media (max-width: 480px) {
    .homepage-title {
        font-size: 2rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* --- LEGACY SUPPORT (for skill tree) --- */
.skill-tree-container {
    flex: 1 0 auto;
}