/* ============================================
   Modern Minimalist Portfolio - Styles
   Light & Dark Theme with Full-Width Layout
   ============================================ */

:root {
    /* Light Theme Colors */
    --bg-primary: #FAFAFA;
    --bg-secondary: #FFFFFF;
    --bg-alt: #F5F5F5;
    --bg-card: #FFFFFF;

    --text-primary: #1A1A1A;
    --text-secondary: #555555;
    --text-muted: #888888;

    --accent: #6366F1;
    --accent-hover: #4F46E5;
    --accent-light: #EEF2FF;

    --border: #E5E5E5;
    --border-light: #F0F0F0;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --section-padding: 120px;

    /* Transitions */
    --transition: 0.3s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0F0F0F;
    --bg-secondary: #1A1A1A;
    --bg-alt: #141414;
    --bg-card: #1E1E1E;

    --text-primary: #FFFFFF;
    --text-secondary: #A0A0A0;
    --text-muted: #666666;

    --accent: #818CF8;
    --accent-hover: #6366F1;
    --accent-light: #1E1B4B;

    --border: #2A2A2A;
    --border-light: #222222;
}

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

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

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition), color var(--transition);
}

/* Full Width Containers */
.header-container,
.section-container,
.footer-container,
.footer-bottom-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: background-color var(--transition), border-color var(--transition);
}

[data-theme="dark"] .header {
    background: rgba(15, 15, 15, 0.9);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: color var(--transition);
}

.nav {
    display: flex;
    gap: 40px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    font-size: 1.1rem;
}

.theme-toggle:hover {
    border-color: var(--text-primary);
    transform: scale(1.05);
}

.theme-icon-dark {
    display: none;
}

[data-theme="dark"] .theme-icon-light {
    display: none;
}

[data-theme="dark"] .theme-icon-dark {
    display: block;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
}

.hero-content {
    max-width: 800px;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--accent);
    margin-bottom: 8px;
    font-weight: 500;
}

.hero-title {
    font-size: clamp(3.5rem, 10vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -3px;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 28px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 48px;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .btn-primary {
    background: #FFFFFF;
    color: #0F0F0F;
}

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

.btn-secondary:hover {
    border-color: var(--text-primary);
    transform: translateY(-3px);
}

/* Sections */
.section {
    padding: var(--section-padding) 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: 56px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background: var(--accent);
    margin-top: 20px;
    border-radius: 2px;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin-bottom: 56px;
}

.about-text {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.8;
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    background: var(--bg-card);
    padding: 40px 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all var(--transition);
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .stat-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -2px;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.skill-category {
    padding: 28px;
    background: var(--bg-primary);
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

[data-theme="dark"] .skill-category {
    background: var(--bg-card);
}

.skill-category-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 18px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    display: inline-block;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all var(--transition);
}

.skill-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Experience Section */
.experience-timeline {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.experience-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.experience-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .experience-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.experience-role {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.experience-company {
    color: var(--accent);
    font-size: 1.05rem;
    font-weight: 500;
}

.experience-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    background: var(--bg-alt);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 500;
}

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

.experience-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.experience-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.project-card {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

[data-theme="dark"] .project-card {
    background: var(--bg-card);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .project-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.project-description {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 24px;
    line-height: 1.7;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.project-tags span {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-alt);
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

/* Education Section */
.education-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border);
    margin-bottom: 56px;
}

.education-degree {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.education-school {
    color: var(--accent);
    font-size: 1.05rem;
    margin-bottom: 10px;
    font-weight: 500;
}

.education-details {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.achievements-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 28px;
}

.achievements-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.achievement-item:hover {
    transform: translateY(-4px);
}

.achievement-icon {
    font-size: 1.5rem;
}

/* Footer / Contact Section */
.footer-contact {
    background: var(--bg-secondary);
    text-align: center;
    padding: 120px 0 0 0;
}

[data-theme="dark"] .footer-contact {
    background: #0A0A0A;
}

.footer-container {
    padding-bottom: 80px;
}

.footer-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 2px;
    margin-bottom: 32px;
}

.footer-headline {
    font-size: clamp(4rem, 15vw, 10rem);
    font-weight: 900;
    letter-spacing: -6px;
    line-height: 1;
    margin-bottom: 32px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="dark"] .footer-headline {
    background: linear-gradient(135deg, #FFFFFF 0%, #888888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.footer-email {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: 48px;
    transition: color var(--transition);
    position: relative;
}

.footer-email::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.footer-email:hover::after {
    transform: scaleX(1);
}

.footer-email:hover {
    color: var(--accent);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.social-link:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    transform: translateY(-4px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 24px 0;
}

.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright,
.footer-credit {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1200px) {

    .header-container,
    .section-container,
    .footer-container,
    .footer-bottom-container {
        padding: 0 40px;
    }

    .experience-timeline {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .achievements-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .header-container,
    .section-container,
    .footer-container,
    .footer-bottom-container {
        padding: 0 24px;
    }

    .nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

    .nav.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-title {
        font-size: 3rem;
        letter-spacing: -2px;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-card {
        padding: 28px 20px;
    }

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

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

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

    .footer-headline {
        font-size: 3rem;
        letter-spacing: -2px;
    }

    .footer-email {
        font-size: 1.1rem;
    }

    .footer-bottom-container {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

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

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

/* Selection Styling */
::selection {
    background: var(--accent);
    color: #FFFFFF;
}

/* Focus Styling */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* Smooth Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}