/* ============================================
   THEME: MODERN
   Dark mode with vibrant purple/blue accents
   ============================================ */

:root {
    /* Colors */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #16162a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --accent: #7c3aed;
    --accent-light: #a855f7;
    --accent-hover: #6d28d9;
    --accent-secondary: #06b6d4;
    --border-color: #2a2a4a;
    --shadow-color: rgba(124, 58, 237, 0.15);

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16162a 100%);
    --gradient-card: linear-gradient(145deg, #1a1a2e 0%, #16162a 100%);
    --gradient-accent: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);

    /* Shapes & Animation */
    --border-radius: 24px;
    --border-radius-sm: 16px;
    --border-radius-pill: 50px;
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes pulse-glow {
    0% {
        box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(124, 58, 237, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(124, 58, 237, 0);
    }
}

@keyframes gradient-shift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Hero Animations */
.hero-avatar {
    animation: float 6s ease-in-out infinite;
}

.hero-content>* {
    animation: fadeInUp 0.8s ease-out backwards;
}

.hero-name {
    animation-delay: 0.1s;
}

.hero-title {
    animation-delay: 0.2s;
}

.hero-location {
    animation-delay: 0.3s;
}

.hero-summary {
    animation-delay: 0.4s;
}

.social-links {
    animation-delay: 0.5s;
}

/* Staggered Card Entrances */
.skill-card,
.project-card,
.experience-item,
.education-card,
.certification-card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.skill-card:nth-child(1) {
    animation-delay: 0.1s;
}

.skill-card:nth-child(2) {
    animation-delay: 0.15s;
}

.skill-card:nth-child(3) {
    animation-delay: 0.2s;
}

.skill-card:nth-child(4) {
    animation-delay: 0.25s;
}

.skill-card:nth-child(5) {
    animation-delay: 0.3s;
}

.skill-card:nth-child(n+6) {
    animation-delay: 0.35s;
}

.project-card:nth-child(1) {
    animation-delay: 0.2s;
}

.project-card:nth-child(2) {
    animation-delay: 0.3s;
}

.project-card:nth-child(3) {
    animation-delay: 0.4s;
}

.project-card:nth-child(n+4) {
    animation-delay: 0.5s;
}

.experience-item {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.experience-item:hover {
    transform: translateX(10px) scale(1.01);
}

/* Chatbox Pulse */
.chatbox-toggle {
    background: var(--gradient-accent);
    color: #ffffff;
    box-shadow: 0 4px 25px var(--shadow-color);
    border-radius: var(--border-radius-pill);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    font-size: 0.95rem;
    animation: pulse-glow 2s infinite;
}

.chatbox-toggle:hover {
    transform: scale(1.05);
}

.chatbox-label {
    font-weight: 600;
}

/* Demo Mode Button */
.demo-btn {
    background: var(--gradient-accent);
    color: #ffffff;
    border: none;
    border-radius: var(--border-radius-pill);
    box-shadow: 0 4px 25px var(--shadow-color);
    transition: var(--transition-fast);
    animation: pulse-glow 2s infinite;
}

.demo-btn:hover {
    transform: scale(1.05);
}

.demo-btn svg {
    transition: transform 0.3s ease;
}

.demo-btn:hover svg {
    transform: rotate(90deg);
}

/* Body */
body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Header */
.header {
    background: rgba(15, 15, 26, 0.9);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

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

.nav-link {
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-light);
}

/* Theme Controls */
.btn-theme-popup {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-color: var(--border-color);
    border-radius: var(--border-radius-pill);
    transition: var(--transition-fast);
}

.btn-theme-popup:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--accent);
}

.btn-theme-like {
    color: var(--text-secondary);
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.btn-theme-like:hover {
    transform: scale(1.2);
    color: var(--accent);
}

.btn-theme-like.liked {
    color: #e94560;
    fill: #e94560;
}

.btn-theme-like.liked .heart-icon {
    fill: #e94560;
    stroke: #e94560;
}

/* Theme Modal */
.theme-modal-overlay {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.theme-modal-overlay.open {
    opacity: 1;
}

.theme-modal-content {
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.theme-modal-overlay.open .theme-modal-content {
    transform: translateY(0);
}

.theme-modal-header {
    border-bottom: 1px solid var(--border-color);
}

.theme-modal-close {
    color: var(--text-secondary);
    opacity: 0.6;
    transition: var(--transition-fast);
}

.theme-modal-close:hover {
    opacity: 1;
    color: var(--text-primary);
}

.theme-option {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
    border: 2px solid transparent;
}

.theme-option:hover {
    background: rgba(255, 255, 255, 0.05);
}

.theme-option.active {
    border-color: var(--accent);
    background: rgba(124, 58, 237, 0.05);
}

.active-indicator {
    color: var(--accent);
}

.badge-popular {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Hero */
.hero {
    background: var(--gradient-hero);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-avatar {
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    background: linear-gradient(var(--bg-primary), var(--bg-primary)) padding-box,
        var(--gradient-accent) border-box;
    box-shadow: 0 8px 40px var(--shadow-color);
}

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

.hero-title {
    color: var(--text-secondary);
}

.hero-location {
    color: var(--accent-secondary);
}

.hero-summary {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Social Links */
.social-link {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--gradient-accent);
    border-color: transparent;
    box-shadow: 0 4px 20px var(--shadow-color);
    transform: translateY(-3px);
    animation: pulse-glow 1s infinite;
}

/* Sections */
.section {
    background: var(--bg-primary);
}

.section:nth-child(even) {
    background: var(--bg-secondary);
}

.section-title {
    color: var(--text-primary);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--gradient-accent);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* Skill Cards */
.skill-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: var(--transition-medium);
}

.skill-card:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 40px var(--shadow-color);
    transform: translateY(-5px);
}

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

.skill-tag {
    background: rgba(124, 58, 237, 0.1);
    color: var(--accent-light);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: var(--border-radius-pill);
}

/* Project Cards */
.project-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: var(--transition-medium);
}

.project-card:hover {
    border-color: var(--accent);
    box-shadow: 0 12px 50px var(--shadow-color);
    transform: translateY(-5px);
}

.project-title {
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

.tech-tag {
    background: var(--gradient-accent);
    color: #ffffff;
    border-radius: 6px;
}

.project-link {
    background: rgba(124, 58, 237, 0.1);
    color: var(--accent-light);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.project-link:hover {
    background: var(--gradient-accent);
    color: #ffffff;
    border-color: transparent;
}

/* Experience */
.experience-item {
    background: var(--gradient-card);
    border-left-width: 3px;
    border-left-color: var(--accent);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.experience-item::before {
    background: var(--gradient-accent);
    border: 3px solid var(--bg-primary);
    border-radius: 50%;
}

.experience-role {
    color: var(--text-primary);
}

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

.experience-period {
    color: var(--accent-secondary);
}

.experience-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Education */
.education-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.education-card:hover {
    border-color: var(--accent);
}

/* Certifications */
.certification-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.certification-card:hover {
    border-color: var(--accent);
}

.education-degree {
    color: var(--text-primary);
}

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

.education-year {
    color: var(--accent-secondary);
}

/* Theme Buttons (Demo) */
.theme-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.theme-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--accent);
}

.theme-btn.active {
    background: var(--gradient-accent);
    color: #ffffff;
    border-color: transparent;
}

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

.chatbox-header {
    background: var(--gradient-accent);
    color: #ffffff;
}

.chatbox-close {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.chatbox-close:hover {
    color: #ffffff;
}

.chatbox-messages {
    background: var(--bg-primary);
}

.message {
    border-radius: var(--border-radius-sm);
}

.message.user {
    background: var(--gradient-accent);
    color: #ffffff;
}

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

.chatbox-input-container {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.chatbox-input {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color);
    border-radius: var(--border-radius-sm);
}

.chatbox-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

.chatbox-send {
    background: var(--gradient-accent);
    color: #ffffff;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.chatbox-send:hover {
    opacity: 0.9;
}

.loading-spinner {
    border-color: var(--accent-light);
    border-top-color: transparent;
}