/* ===================================
   MODERN AI ARCHITECT PORTFOLIO
   =================================== */

:root {
    /* Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-elevated: #1a1a1a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --text-quaternary: rgba(255, 255, 255, 0.3);

    --accent-primary: #00d4ff;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
    --accent-glow: rgba(0, 212, 255, 0.3);

    --success: #00ff88;
    --warning: #ffaa00;

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   RESET & BASE
   =================================== */

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

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

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

::selection {
    background: var(--accent-glow);
    color: var(--text-primary);
}

/* ===================================
   CURSOR GLOW
   =================================== */

.cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
}

/* ===================================
   NAVIGATION
   =================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    animation: slideDown 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: transform var(--transition-fast);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-links a {
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-base);
}

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

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

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    padding-top: calc(var(--spacing-3xl) + 80px);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 153, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    width: 100%;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.3s backwards;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.95);
    }
}

.hero-title {
    font-size: clamp(3rem, 10vw, 5.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
}

.hero-title .line {
    display: block;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.hero-title .line:nth-child(1) {
    animation-delay: 0.4s;
}

.hero-title .line:nth-child(2) {
    animation-delay: 0.5s;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.6s backwards;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.7s backwards;
}

.stat-card {
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all var(--transition-base);
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.8s backwards;
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    background: var(--bg-card);
}

/* ===================================
   SCROLL INDICATOR
   =================================== */

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-quaternary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: fadeIn 1s ease-in-out 1.5s backwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--text-quaternary), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% {
        transform: translateY(0);
        opacity: 0;
    }
    50% {
        transform: translateY(10px);
        opacity: 1;
    }
}

/* ===================================
   ARCHITECTURES SECTION
   =================================== */

.architectures {
    padding: var(--spacing-3xl) var(--spacing-xl);
    background: var(--bg-secondary);
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.section-title {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.architecture-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    gap: var(--spacing-xl);
}

/* ===================================
   ARCHITECTURE CARDS
   =================================== */

.arch-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--spacing-xl);
    align-items: start;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.arch-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.arch-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateX(8px);
}

.arch-card:hover::before {
    transform: scaleX(1);
}

.arch-number {
    font-size: 4rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.05);
    line-height: 1;
    transition: color var(--transition-base);
}

.arch-card:hover .arch-number {
    color: rgba(255, 255, 255, 0.1);
}

.arch-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.arch-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.arch-header h3 {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.status-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(255, 170, 0, 0.1);
    color: var(--warning);
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.arch-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-tag {
    font-size: 0.8125rem;
    padding: 0.375rem 0.875rem;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 6px;
    font-weight: 500;
}

.arch-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding-top: var(--spacing-sm);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.highlight-item::before {
    content: '→';
    color: var(--accent-primary);
    font-weight: 700;
}

.arch-arrow {
    font-size: 1.5rem;
    color: var(--text-quaternary);
    transition: all var(--transition-base);
}

.arch-card:hover .arch-arrow {
    color: var(--accent-primary);
    transform: translateX(4px);
}

/* ===================================
   ABOUT SECTION
   =================================== */

.about {
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.about-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-3xl);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.subsection-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin: var(--spacing-xl) 0 var(--spacing-lg);
}

.competencies {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.competency-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all var(--transition-base);
}

.competency-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.competency-icon {
    font-size: 2rem;
    line-height: 1;
}

.competency-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.competency-content p {
    color: var(--text-tertiary);
    margin: 0;
}

/* ===================================
   SIDEBAR
   =================================== */

.about-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
}

.sidebar-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.skill-group {
    margin-bottom: var(--spacing-md);
}

.skill-group:last-child {
    margin-bottom: 0;
}

.skill-group h4 {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tags span {
    font-size: 0.8125rem;
    padding: 0.375rem 0.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.skill-tags span:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.cert-list {
    list-style: none;
}

.cert-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
    position: relative;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9375rem;
}

.cert-list li:last-child {
    border-bottom: none;
}

.cert-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

.edu-item h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.edu-item p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

.edu-school {
    color: var(--text-primary);
    font-weight: 600;
}

.edu-note {
    font-size: 0.875rem;
    font-style: italic;
    color: var(--text-tertiary);
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact {
    padding: var(--spacing-3xl) var(--spacing-xl);
    background: var(--bg-secondary);
}

.contact-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.contact-content .section-subtitle {
    margin-bottom: var(--spacing-xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contact-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-decoration: none;
    text-align: left;
    transition: all var(--transition-base);
}

.contact-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border-radius: 8px;
    color: var(--accent-primary);
    transition: all var(--transition-base);
}

.contact-card:hover .contact-icon {
    background: rgba(0, 212, 255, 0.1);
}

.contact-info {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.contact-value {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
}

.location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-tertiary);
    font-size: 0.9375rem;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-content p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* ===================================
   RESPONSIVE
   =================================== */

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-content {
        padding: var(--spacing-md);
    }

    .nav-links {
        gap: var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
        padding-top: calc(var(--spacing-xl) + 80px);
    }

    .hero-title {
        font-size: 3rem;
    }

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

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .architectures,
    .about,
    .contact {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .arch-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .arch-number {
        font-size: 3rem;
    }

    .arch-arrow {
        display: none;
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .arch-header h3 {
        font-size: 1.5rem;
    }
}

/* ===================================
   ANIMATIONS & UTILITIES
   =================================== */

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