/* =====================================================
   TREBAX DEVELOPMENT - Main Stylesheet
   ===================================================== */

/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #06b6d4;
    --gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg: #ffffff;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Section */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient);
    color: white;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--secondary);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

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

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

.btn-full {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    padding: 12px 0;
}

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

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-text {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-sub {
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 4px;
    color: var(--text-light);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    position: relative;
}

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

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text);
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    padding: 140px 24px 80px;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 24px;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 24px;
    color: var(--secondary);
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 540px;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
}

.code-window {
    background: var(--secondary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    width: 100%;
    max-width: 500px;
}

.code-header {
    display: flex;
    gap: 8px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.05);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #22c55e; }

.code-content {
    padding: 24px;
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    line-height: 1.7;
    color: #e2e8f0;
    overflow-x: auto;
}

.code-content .keyword { color: #c084fc; }
.code-content .class-name { color: #4ade80; }
.code-content .method { color: #60a5fa; }

.hero-stats {
    max-width: 1200px;
    margin: 80px auto 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.stat {
    text-align: center;
    padding: 32px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

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

.about-content {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 60px;
    align-items: start;
}

.profile-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
    position: sticky;
    top: 100px;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 48px;
    color: white;
}

.profile-card h3 {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 8px;
}

.profile-title {
    color: var(--text-light);
    margin-bottom: 16px;
}

.profile-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 20px;
}

.badge {
    padding: 6px 12px;
    background: var(--bg-light);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-light);
}

.profile-links {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.profile-links a {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
    color: var(--text-light);
    font-size: 20px;
    transition: var(--transition);
}

.profile-links a:hover {
    background: var(--primary);
    color: white;
}

.about-text h3 {
    font-size: 1.75rem;
    color: var(--secondary);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.0625rem;
}

.about-highlights {
    display: grid;
    gap: 16px;
    margin-top: 32px;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 12px;
}

.highlight i {
    color: var(--primary);
    font-size: 20px;
}

.highlight span {
    font-weight: 500;
}

/* Services Section */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-light);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-features li::before {
    content: '→';
    color: var(--primary);
    font-weight: 600;
}

/* Experience Section */
.experience {
    background: var(--bg);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-left: 72px;
    margin-bottom: 48px;
}

.timeline-marker {
    position: absolute;
    left: 16px;
    top: 8px;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border-radius: 50%;
    border: 4px solid var(--bg);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.timeline-content {
    background: white;
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.timeline-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
}

.company-logo {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    background: var(--bg-light);
    padding: 8px;
}

.company-logo-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    flex-shrink: 0;
}

.timeline-header h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 4px;
}

.timeline-date {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

.timeline-location {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
}

.timeline-role {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.timeline-projects {
    display: grid;
    gap: 20px;
}

.project h4 {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 8px;
}

.project p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-tags span {
    padding: 4px 12px;
    background: var(--bg-light);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-light);
}

/* Skills Section */
.skills {
    background: var(--bg-light);
}

.skills-content {
    display: grid;
    gap: 40px;
    margin-bottom: 60px;
}

.skills-category h3 {
    font-size: 1.125rem;
    color: var(--secondary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.skills-category h3 i {
    color: var(--primary);
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    padding: 10px 20px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
}

.skill-tag:hover {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
    color: var(--primary);
}

.certifications, .education {
    margin-top: 60px;
}

.certifications h3, .education h3 {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.certifications h3 i, .education h3 i {
    color: var(--primary);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.cert-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: white;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

.cert-card i {
    font-size: 32px;
    color: var(--primary);
}

.cert-card p {
    font-size: 14px;
    color: var(--text);
    font-weight: 500;
}

.edu-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.edu-card {
    background: white;
    padding: 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.edu-year {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
}

.edu-card h4 {
    font-size: 1.125rem;
    color: var(--secondary);
    margin-bottom: 8px;
}

.edu-card p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 12px;
}

.edu-card small {
    display: block;
    color: var(--text-muted);
    font-size: 13px;
    font-style: italic;
}

/* Contact Section */
.contact {
    background: var(--bg);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: grid;
    gap: 20px;
}

.contact-card {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.contact-details p {
    color: var(--text);
    font-size: 15px;
}

.contact-details a {
    color: var(--primary);
    font-weight: 500;
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-form-wrapper {
    background: white;
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 80px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-text {
    color: white;
}

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

.footer-links h4,
.footer-contact h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul {
    display: grid;
    gap: 12px;
}

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

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer-contact i {
    color: var(--primary-light);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.75rem;
    }

    .hero-description {
        margin: 0 auto 32px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .code-window {
        max-width: 450px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .profile-card {
        position: static;
        max-width: 400px;
        margin: 0 auto;
    }

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

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

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

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
    }

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

    .nav-toggle {
        display: block;
    }

    .hero {
        padding: 120px 24px 60px;
    }

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

    .hero-description {
        font-size: 1.0625rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .timeline::before {
        left: 16px;
    }

    .timeline-item {
        padding-left: 56px;
    }

    .timeline-marker {
        left: 8px;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .contact-form-wrapper {
        padding: 28px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 1.875rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .code-window {
        font-size: 12px;
    }

    .stat-number {
        font-size: 2.25rem;
    }
}