/* 
 * Portfolio Theme - Midnight Edge
 */

:root {
    /* Colors */
    --bg-body: #0e0e0e;
    --bg-surface: #18181b;
    --bg-surface-glass: rgba(24, 24, 27, 0.7);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    
    --accent-primary: #6366f1; /* Indigo */
    --accent-secondary: #06b6d4; /* Cyan */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    
    /* Typography */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-hero: clamp(3rem, 8vw, 6rem);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Layout */
    --container-width: 1200px;
    --container-padding: 1.5rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

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

/* Loading Screen */
.loading {
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
}

.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-body);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loader-content {
    text-align: center;
    opacity: 0; /* Animated by GSAP */
}

.loader-name {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.loader-role {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Typography Utilities */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    line-height: 1.2;
    color: var(--text-primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
    /* Touch target size fix for inline links on mobile if they block */
    -webkit-tap-highlight-color: transparent;
}

p {
    color: var(--text-secondary);
    max-width: 65ch;
}

/* Accessibility: Focus States */
:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 4px;
    border-radius: 2px;

}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
    opacity: 0; /* For ScrollTrigger */
    transform: translateY(20px);
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-primary);
}

.btn-text {
    color: var(--accent-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-text .arrow {
    transition: transform var(--transition-fast);
}

.btn-text:hover .arrow {
    transform: translateX(4px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: var(--spacing-sm) 0;
    padding-top: max(var(--spacing-sm), env(safe-area-inset-top));
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: var(--bg-surface-glass);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
}

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

.nav-logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: var(--text-xl);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav-link {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-fast);
}

.nav-link.active::after {
    width: 100%;
}

.btn-primary-sm {
    padding: 0.5rem 1rem;
    background: var(--accent-gradient);
    color: white !important;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.btn-primary-sm::after {
    display: none;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
}

.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    left: 0;
    transition: var(--transition-fast);
}

.hamburger::before { top: -8px; }
.hamburger::after { bottom: -8px; }

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--spacing-xl); /* clear nav */
}

/* Updated Hero Container - Text Only / Centered */
.hero-container.text-only-hero {
    display: flex;
    justify-content: center;
    text-align: center;
    max-width: 800px; /* Constrain width for better readability */
}

.hero-subtitle {
    display: block;
    color: var(--accent-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: var(--text-lg);
}

.hero-title {
    font-size: var(--text-hero);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-role {
    font-size: var(--text-2xl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.accent-x {
    color: var(--accent-primary);
    font-weight: 700;
    padding: 0 0.2rem;
}

.hero-text {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-lg);
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.6;
}

.scroll-text {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--text-primary), transparent);
}

/* Education Cards */
.education-grid {
    display: grid;
    gap: var(--spacing-md);
    position: relative;
    padding-left: 2rem;
}

.education-grid::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.edu-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    position: relative;
}

.edu-icon {
    position: absolute;
    left: -42px; /* 2rem padding + card gap adjustment */
    top: 2rem;
    width: 24px;
    height: 24px;
    background: var(--bg-body);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 10px; /* For icon */
}

/* Iconify fixes for Education timeline icons */
.edu-icon .iconify {
    width: 12px;
    height: 12px;
}

.edu-school {
    font-size: var(--text-xl);
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.edu-meta {
    font-size: var(--text-sm);
    color: var(--accent-secondary);
    margin-bottom: var(--spacing-sm);
    font-family: monospace;
}

.edu-degree {
    font-weight: 500;
}

.edu-gpa {
    margin-top: 0.5rem;
    font-size: var(--text-sm);
    font-weight: 700;
}

/* Certifications Section */
.certs-list {
    display: grid;
    gap: var(--spacing-sm);
}

.cert-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.cert-item.link:hover {
    border-color: var(--accent-primary);
    transform: translateX(10px);
}

.cert-icon-box {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

/* Iconify sizing */
.cert-icon, .cert-icon-svg {
    width: 28px;
    height: 28px;
}

.cert-info {
    flex: 1;
}

.cert-name {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.cert-issuer {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.cert-arrow {
    font-size: var(--text-xl);
    color: var(--accent-primary);
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition-fast);
}

.cert-item.link:hover .cert-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-sm);
    transition: var(--transition-fast);
}

.skill-card:hover {
    border-color: var(--accent-secondary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.skill-icon-wrapper {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skill-svg {
    width: 40px;
    height: 40px;
    /* Iconify handles color/rendering */
}

.skill-name {
    font-weight: 500;
    font-size: var(--text-sm);
}

/* Projects */
.projects-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.project-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 400px;
}

.project-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.project-overline {
    color: var(--accent-secondary);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.project-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-sm);
}

.project-desc {
    margin-bottom: var(--spacing-md);
}

.project-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gradient-1 { background: radial-gradient(circle at center, #2e1065, #000); }
.gradient-2 { background: radial-gradient(circle at center, #0e7490, #000); }

.project-icon-bg {
    width: 120px;
    height: 120px;
    opacity: 0.1;
    color: white;
}

/* Footer */
.footer-section {
    background: #000;
    padding: var(--spacing-xl) 0 2rem;
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    padding-bottom: max(2rem, env(safe-area-inset-bottom));
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-title {
    font-size: var(--text-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-text {
    margin-bottom: var(--spacing-md);
}

.copyright {
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* Responsive Queries */
@media (max-width: 968px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 5rem;
    }
    
    .project-card {
        grid-template-columns: 1fr;
        min-height: auto;
    }
    
    .project-visual {
        min-height: 200px;
        order: -1;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 80%;
        max-width: 300px;
        background: var(--bg-surface);
        flex-direction: column;
        padding: 5rem 2rem;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        border-left: 1px solid var(--border-color);
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .menu-toggle {
        display: block;
        z-index: 101;
    }
    
    /* Toggle animation support */
    .menu-toggle.active .hamburger { background: transparent; }
    .menu-toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
    .menu-toggle.active .hamburger::after { transform: rotate(-45deg); top: 0; }
    
    .hero-title {
        font-size: 3rem; /* Fallback for clamp */
    }
    
    .education-grid {
        padding-left: 1rem;
    }
    
    .edu-icon {
        width: 16px;
        height: 16px;
        left: -25px; /* Adjust line offset */
        top: 2.2rem;
    }

    /* Mobile: Scroll Indicator */
    .hero-section {
        padding-bottom: 4rem; 
    }
    
    .scroll-indicator {
        position: absolute; /* Keep absolute but check spacing */
        bottom: 2rem; 
        left: 50%;
        transform: translateX(-50%);
    }

    /* Cert tweaks for mobile */
    .cert-item {
        flex-direction: row; /* Keep row unless tiny */
        padding: var(--spacing-sm);
    }
    
    .cert-icon-box {
        width: 40px;
        height: 40px;
    }
    
    .cert-icon, .cert-icon-svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    /* On very small screens, stack cert content if needed, but row usually fine */
    .cert-name {
        font-size: var(--text-base);
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr); /* Force 2 cols on mobile */
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .section, .loader-content {
        opacity: 1 !important;
        transform: none !important;
    }
}