/* Rohan Joseph Portfolio - Clean Dark Theme */

:root {
    --bg-primary: #0c0c0c;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --bg-hover: #242424;
    --accent: #3b82f6;
    --accent-muted: #2563eb;
    --text-primary: #f5f5f5;
    --text-secondary: #9a9a9a;
    --text-muted: #5a5a5a;
    --border-color: #262626;
    --green: #22c55e;
    --radius: 8px;
    --radius-sm: 4px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

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

.nav-brand {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.nav-brand i {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.nav-menu a.active {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 80px 20px;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--accent);
    margin-bottom: 8px;
    font-weight: 500;
}

.hero .tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-muted);
}

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

.btn-secondary:hover {
    background-color: var(--bg-hover);
    border-color: var(--text-muted);
}

/* Sections */
section {
    padding: 80px 0;
}

section h2 {
    font-size: 1.75rem;
    margin-bottom: 40px;
    color: var(--text-primary);
    font-weight: 600;
}

/* About Section */
.about {
    background-color: var(--bg-secondary);
}

.about h2 {
    text-align: left;
}

.about p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 700px;
}

/* Skills Grid */
.skills h2 {
    text-align: left;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.skill-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.skill-card:hover {
    border-color: var(--text-muted);
}

.skill-card i {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--accent);
}

.skill-card h3 {
    margin-bottom: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.skill-card p {
    color: var(--text-muted);
    margin-bottom: 12px;
    font-size: 0.85rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-tags span {
    background-color: var(--bg-hover);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Certifications */
.certifications {
    background-color: var(--bg-secondary);
}

.certifications h2 {
    text-align: left;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.cert-badge {
    background: var(--bg-card);
    padding: 16px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--border-color);
}

.cert-badge i {
    font-size: 1.25rem;
    color: var(--green);
    flex-shrink: 0;
}

.cert-badge p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Page Header */
.page-header {
    background: var(--bg-secondary);
    padding: 120px 0 48px;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 600;
}

.page-header p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Resume Page */
.resume-section {
    background-color: var(--bg-primary);
}

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

.resume-block {
    margin-bottom: 48px;
}

.resume-block h2 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--text-primary);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.resume-block h2 i {
    color: var(--accent);
    font-size: 1rem;
}

.resume-item {
    margin-bottom: 20px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.resume-item h3 {
    color: var(--text-primary);
    margin-bottom: 4px;
    font-size: 1rem;
    font-weight: 600;
}

.company {
    font-weight: 500;
    color: var(--accent);
    font-size: 0.9rem;
}

.date {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 12px;
}

.resume-item ul {
    margin-left: 20px;
    margin-top: 12px;
}

.resume-item li {
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.certifications-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

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

.cert-item i {
    font-size: 1.25rem;
    color: var(--green);
    flex-shrink: 0;
}

.cert-item h4 {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

.cert-item p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.skills-summary {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.skill-category {
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.skill-category h4 {
    color: var(--text-primary);
    margin-bottom: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

.skill-category p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Error Page */
.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
}

.error-content {
    text-align: center;
}

.error-content h1 {
    font-size: 6rem;
    color: var(--accent);
    font-weight: 700;
}

.error-content h2 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.error-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    padding: 32px 0;
    border-top: 1px solid var(--border-color);
}

footer .container {
    display: flex;
    justify-content: center;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: color 0.2s;
}

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

/* Mobile Navigation */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 8px;
}

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

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

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

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

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        padding: 14px;
        text-align: center;
        border-radius: var(--radius);
    }

    .hero {
        padding: 100px 16px 60px;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero .subtitle {
        font-size: 1.1rem;
    }

    .hero .tagline {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .btn {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
    }

    section {
        padding: 56px 0;
    }

    section h2 {
        font-size: 1.5rem;
        margin-bottom: 28px;
    }

    .about p {
        font-size: 1rem;
        line-height: 1.7;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .skill-card {
        padding: 20px;
    }

    .skill-card i {
        font-size: 1.25rem;
        margin-bottom: 10px;
    }

    .skill-card h3 {
        font-size: 0.95rem;
    }

    .cert-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .cert-badge {
        padding: 14px;
    }

    .certifications-list,
    .skills-summary {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .page-header {
        padding: 100px 0 32px;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    .resume-block {
        margin-bottom: 36px;
    }

    .resume-block h2 {
        font-size: 1.1rem;
    }

    .resume-item {
        padding: 16px;
    }

    .resume-item h3 {
        font-size: 0.95rem;
    }

    .resume-item li {
        font-size: 0.85rem;
    }

    footer {
        padding: 24px 0;
    }

    .social-links a {
        font-size: 1.35rem;
    }
}

@media (max-width: 400px) {
    .hero h1 {
        font-size: 1.85rem;
    }

    .hero .subtitle {
        font-size: 1rem;
    }

    section h2 {
        font-size: 1.35rem;
    }

    .tech-tags span {
        font-size: 0.7rem;
        padding: 3px 8px;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::selection {
    background: var(--accent);
    color: white;
}