/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors */
    --primary-dark: #0f0f1a;
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent-1: #ff6b6b;
    --accent-2: #ffa502;
    --accent-3: #7c3aed;
    --accent-4: #06d6a0;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 24px;

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

    /* Effects */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --border-radius: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--primary-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
}

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

.nav-cta {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    padding: 10px 20px !important;
    border-radius: 50px;
    color: white !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.3);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent-3), var(--accent-1));
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent-4), var(--accent-3));
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(20px, 30px) scale(1.02);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-4), #04b890);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(6, 214, 160, 0.4);
    }

    50% {
        box-shadow: 0 0 0 15px rgba(6, 214, 160, 0);
    }
}

.hero-title {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
}

.highlight {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 24px);
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-weight: 400;
}

.hero-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 15px;
}

.info-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.info-item a:hover {
    color: var(--accent-1);
}

.info-icon {
    font-size: 18px;
}

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

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(255, 107, 107, 0.3);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.btn-large {
    padding: 18px 36px;
    font-size: 16px;
}

/* ===================================
   Sections
   =================================== */
.section {
    padding: var(--section-padding);
    position: relative;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-3), var(--accent-1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
}

/* ===================================
   Cards
   =================================== */
.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 32px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

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

.card-badge {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

.badge-primary {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
}

.badge-accent {
    background: linear-gradient(135deg, var(--accent-3), #9b59b6);
    color: white;
}

.badge-success {
    background: linear-gradient(135deg, var(--accent-4), #04b890);
    color: white;
}

.badge-info {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.card-subtitle {
    color: var(--accent-1);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 16px;
}

.card-description {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 20px;
}

.card-description strong {
    color: var(--accent-2);
}

.card-details {
    border-top: 1px solid var(--glass-border);
    padding-top: 20px;
}

.detail-grid {
    display: grid;
    gap: 16px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-label {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.detail-value {
    color: var(--text-secondary);
    font-size: 14px;
}

.highlight-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-4), #04b890);
    color: white;
    padding: 2px 10px;
    border-radius: 50px;
    font-weight: 600;
}

/* ===================================
   Timeline
   =================================== */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-1), var(--accent-3), var(--accent-4));
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 32px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-dark);
    border: 3px solid var(--accent-1);
    z-index: 1;
}

.timeline-item:nth-child(2) .timeline-marker {
    border-color: var(--accent-3);
}

.timeline-item:nth-child(3) .timeline-marker {
    border-color: var(--accent-4);
}

/* ===================================
   Experience Grid
   =================================== */
.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.experience-card {
    position: relative;
}

.experience-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.experience-stats {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--glass-border);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-value {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.experience-list {
    list-style: none;
    margin-top: 16px;
}

.experience-list li {
    position: relative;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.experience-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-1);
}

/* ===================================
   Certifications
   =================================== */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.certification-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: var(--transition);
}

.certification-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.certification-icon {
    font-size: 48px;
    flex-shrink: 0;
}

.certification-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.certification-content p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.certification-date {
    color: var(--accent-1);
    font-size: 13px;
    font-weight: 500;
}

/* ===================================
   Skills
   =================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.skill-category {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: var(--transition);
}

.skill-category:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.skill-icon {
    font-size: 28px;
}

.skill-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skill-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name {
    font-size: 15px;
    font-weight: 500;
}

.skill-level {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

.level-native {
    background: linear-gradient(135deg, var(--accent-4), #04b890);
    color: white;
}

.level-advanced {
    background: linear-gradient(135deg, var(--accent-3), #9b59b6);
    color: white;
}

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

.skill-tag {
    background: rgba(124, 58, 237, 0.2);
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.skill-tag:hover {
    background: rgba(124, 58, 237, 0.3);
    transform: translateY(-2px);
}

.tag-interest {
    background: rgba(255, 107, 107, 0.2);
    border-color: rgba(255, 107, 107, 0.3);
}

.tag-interest:hover {
    background: rgba(255, 107, 107, 0.3);
}

/* ===================================
   Contact Section
   =================================== */
.contact-section {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-description {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 40px;
}

.contact-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--primary-dark);
    border-top: 1px solid var(--glass-border);
    padding: 32px 24px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

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

.footer-location {
    margin-top: 8px;
}

/* ===================================
   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);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero-info {
        flex-direction: column;
        gap: 12px;
    }

    .section {
        padding: 60px 0;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline::before {
        left: 4px;
    }

    .timeline-marker {
        left: -30px;
        width: 14px;
        height: 14px;
    }

    .card {
        padding: 24px;
    }

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

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

    .btn-large {
        width: 100%;
        justify-content: center;
    }
}