/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */

:root {
    /* Fonts */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;

    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 7rem;

    /* Default Theme: Dark Mode (Silicon Valley Tech Aesthetics) */
    --bg-color: #050811;
    --bg-navbar: rgba(5, 8, 17, 0.8);
    --bg-card: rgba(13, 20, 38, 0.5);
    --bg-card-hover: rgba(20, 30, 58, 0.7);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-color-hover: rgba(0, 102, 255, 0.35);
    
    /* Accents */
    --accent-primary: #0066ff;
    --accent-primary-rgb: 0, 102, 255;
    --accent-secondary: #a855f7;
    --accent-secondary-rgb: 168, 85, 247;
    --accent-cyan: #06b6d4;
    --accent-cyan-rgb: 6, 182, 212;
    --accent-green: #10b981;
    --accent-error: #ef4444;

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Glows & Filters */
    --glow-color: rgba(0, 102, 255, 0.25);
    --glow-purple: rgba(168, 85, 247, 0.2);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    --backdrop-blur: blur(12px);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Mode Overrides */
body.light-mode {
    --bg-color: #f8fafc;
    --bg-navbar: rgba(248, 250, 252, 0.85);
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-hover: rgba(0, 102, 255, 0.5);

    /* Accents */
    --accent-primary: #0052cc;
    --accent-primary-rgb: 0, 82, 204;
    --accent-secondary: #7c3aed;
    --accent-secondary-rgb: 124, 58, 237;
    --accent-cyan: #0891b2;
    --accent-cyan-rgb: 8, 145, 178;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;

    /* Glows & Filters */
    --glow-color: rgba(0, 82, 204, 0.08);
    --glow-purple: rgba(124, 58, 237, 0.06);
    --card-shadow: 0 8px 24px 0 rgba(148, 163, 184, 0.15);
}

/* ==========================================================================
   RESET & BASICS
   ========================================================================== */

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

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

button, input, select, textarea {
    font-family: inherit;
    color: inherit;
    background: none;
    border: none;
}

ul {
    list-style: none;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(var(--accent-primary-rgb), 0.2);
    border-radius: 5px;
    border: 2px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--accent-primary-rgb), 0.5);
}

/* ==========================================================================
   LOADER OVERLAY
   ========================================================================== */

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #03060c;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loader-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loader-content {
    text-align: center;
    width: 320px;
    padding: var(--spacing-md);
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(0, 102, 255, 0.1);
    border-top: 3px solid var(--accent-primary);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md) auto;
    animation: spin 1s linear infinite;
}

.loader-text {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 0.85rem;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.loader-percent {
    font-family: var(--font-mono);
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.loader-bar-container {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}

.loader-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width 0.1s linear;
}

/* ==========================================================================
   PARTICLE CANVAS & GLOW ELEMENTS
   ========================================================================== */

.particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ==========================================================================
   SHARED UI ELEMENTS / UTILITIES
   ========================================================================== */

.section-padding {
    padding: var(--spacing-xxl) 0;
    position: relative;
    z-index: 1;
}

.section-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Typography styles */
.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.section-title .title-index {
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 400;
    margin-right: var(--spacing-xs);
}

.section-tagline {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl) auto;
    font-size: 1.1rem;
}

.text-center { text-align: center; }
.text-green { color: var(--accent-green) !important; }
.text-error { color: var(--accent-error); }

/* Glassmorphism Cards */
.glow-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glow-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color-hover);
    box-shadow: 0 12px 40px 0 rgba(var(--accent-primary-rgb), 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.8rem 1.6rem;
    font-weight: 600;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #fff;
    box-shadow: 0 4px 15px rgba(var(--accent-primary-rgb), 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--accent-primary-rgb), 0.4);
}

.btn-glow:hover {
    box-shadow: 0 0 25px rgba(var(--accent-primary-rgb), 0.6);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(var(--accent-primary-rgb), 0.05);
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(var(--accent-primary-rgb), 0.08);
    border: 1px solid rgba(var(--accent-primary-rgb), 0.2);
    color: var(--accent-primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-primary);
    border-radius: 50%;
    display: inline-block;
    animation: pulse-dot 2s infinite;
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-navbar);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.navbar-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo {
    display: flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    position: relative;
}

.logo-code {
    color: var(--accent-primary);
    font-weight: 400;
}

.logo-text {
    margin: 0 2px;
}

.logo-dot {
    width: 4px;
    height: 4px;
    background-color: var(--accent-secondary);
    border-radius: 50%;
    margin-left: 2px;
    box-shadow: 0 0 8px var(--accent-secondary);
}

.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width var(--transition-fast);
}

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

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

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Theme Toggle Button */
.theme-toggle-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.theme-toggle-btn:hover {
    border-color: var(--accent-primary);
    background-color: rgba(var(--accent-primary-rgb), 0.05);
}

.sun-icon { display: none; }
.moon-icon { display: block; }

body.light-mode .sun-icon { display: block; }
body.light-mode .moon-icon { display: none; }

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.hero-glow-1 {
    position: absolute;
    top: 10%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--glow-color) 0%, rgba(0,0,0,0) 70%);
    pointer-events: none;
    z-index: -1;
    animation: float-glow 15s ease-in-out infinite alternate;
}

.hero-glow-2 {
    position: absolute;
    bottom: 10%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--glow-purple) 0%, rgba(0,0,0,0) 70%);
    pointer-events: none;
    z-index: -1;
    animation: float-glow-reverse 20s ease-in-out infinite alternate;
}

.hero-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin: var(--spacing-sm) 0 var(--spacing-xs) 0;
    letter-spacing: -1px;
    background: linear-gradient(135deg, var(--text-primary) 30%, rgba(var(--accent-primary-rgb), 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title {
    font-size: 1.25rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.hero-title .divider {
    color: var(--text-muted);
    margin: 0 4px;
    font-weight: 300;
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 580px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.meta-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

a.meta-chip {
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
}

a.meta-chip:hover {
    background: rgba(0, 102, 255, 0.08);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.15);
}

.meta-chip i {
    width: 14px;
    height: 14px;
    color: var(--accent-primary);
}

.hero-ctas {
    display: flex;
    gap: var(--spacing-md);
}

/* Hero Stats Visual Panel */
.hero-visual {
    position: relative;
    width: 100%;
}

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.metric-card {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.metric-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(var(--accent-primary-rgb), 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.metric-icon i {
    width: 18px;
    height: 18px;
    color: var(--accent-primary);
}

.metric-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1.1;
    margin-bottom: 2px;
}

.metric-number-text {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1.2;
    margin: 8px 0 6px 0;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   ABOUT ME SECTION
   ========================================================================== */

.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-top: var(--spacing-lg);
}

.about-subtitle {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-sm);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

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

.skills-highlight-title {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.skills-mini-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.mini-skill-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.mini-skill-item i {
    width: 14px;
    height: 14px;
    color: var(--accent-primary);
    flex-shrink: 0;
}

/* Profile Picture Frame Styling */
.about-visual {
    display: flex;
    justify-content: center;
    position: relative;
}

.profile-frame {
    position: relative;
    width: 320px;
    height: 320px;
    border-radius: 16px;
}

.frame-glow {
    position: absolute;
    top: -5px;
    left: -5px;
    width: calc(100% + 10px);
    height: calc(100% + 10px);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 20px;
    z-index: -1;
    filter: blur(10px);
    opacity: 0.4;
    transition: opacity var(--transition-normal);
}

.profile-frame:hover .frame-glow {
    opacity: 0.7;
}

.profile-image-container {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 16px;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.profile-frame:hover .profile-img {
    transform: scale(1.05);
}

.profile-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(5, 8, 17, 0) 60%, rgba(5, 8, 17, 0.6) 100%);
    pointer-events: none;
}

/* Floating overlay badges */
.tech-tag {
    position: absolute;
    background: rgba(5, 8, 17, 0.85);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-mono);
    backdrop-filter: blur(4px);
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.tag-top-left {
    top: 20px;
    left: 20px;
    border-left: 3px solid var(--accent-primary);
}

.tag-bottom-right {
    bottom: 20px;
    right: 20px;
    border-right: 3px solid var(--accent-secondary);
}

/* ==========================================================================
   TECH STACK SECTION
   ========================================================================== */

.skills-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    background: rgba(var(--accent-primary-rgb), 0.03);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary));
    color: #fff;
    border-color: var(--accent-primary);
    box-shadow: 0 4px 15px rgba(var(--accent-primary-rgb), 0.25);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-color-hover);
    box-shadow: 0 8px 30px rgba(var(--accent-primary-rgb), 0.12);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.skill-icon {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    background: rgba(255,255,255,0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.skill-card:hover .skill-icon {
    background: rgba(var(--accent-primary-rgb), 0.08);
}

.skill-icon i {
    width: 18px;
    height: 18px;
    color: var(--accent-cyan);
}

.skill-card:hover .skill-icon i {
    color: var(--accent-primary);
    transform: scale(1.1);
}

.skill-badge {
    font-size: 0.7rem;
    font-weight: 700;
    font-family: var(--font-mono);
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
}

.skill-badge.expert {
    background: rgba(0, 102, 255, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 102, 255, 0.2);
}

.skill-badge.advanced {
    background: rgba(168, 85, 247, 0.1);
    color: var(--accent-secondary);
    border: 1px solid rgba(168, 85, 247, 0.2);
}

.skill-badge.intermediate {
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.skill-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.skill-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Skills hide/show transitions */
.skill-card.hidden {
    opacity: 0;
    transform: scale(0.9);
    position: absolute;
    pointer-events: none;
    visibility: hidden;
}

/* ==========================================================================
   EXPERIENCE SECTION (TIMELINE)
   ========================================================================== */

.timeline {
    position: relative;
    max-width: 900px;
    margin: var(--spacing-xl) auto 0 auto;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 4px;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary) 50%, rgba(255,255,255,0.05) 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.timeline-dot {
    position: absolute;
    top: 30px;
    left: -30px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    border: 2px solid var(--bg-color);
    box-shadow: 0 0 10px var(--accent-primary);
    z-index: 2;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.timeline-item:hover .timeline-dot {
    background-color: var(--accent-secondary);
    transform: scale(1.3);
    box-shadow: 0 0 10px var(--accent-secondary);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-cyan);
    margin-bottom: 6px;
    display: inline-block;
}

.timeline-content {
    padding: var(--spacing-md) var(--spacing-lg);
}

.company-badge {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
    margin-bottom: var(--spacing-xs);
}

.comp-name {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
}

.comp-role {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

.timeline-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* QA log console style inside timeline */
.qa-logs {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 6px;
    padding: 12px var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-mono);
}

.log-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.log-title i {
    width: 12px;
    height: 12px;
}

.qa-logs ul li {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    position: relative;
    padding-left: 12px;
}

.qa-logs ul li::before {
    content: '›';
    position: absolute;
    left: 0;
    top: -1px;
    color: var(--accent-primary);
    font-weight: 700;
}

.qa-logs ul li:last-child {
    margin-bottom: 0;
}

.log-tag {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 1px 4px;
    border-radius: 3px;
    margin-right: var(--spacing-xs);
}

.log-tag.tag-green { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.log-tag.tag-blue { background: rgba(0, 102, 255, 0.1); color: var(--accent-primary); }
.log-tag.tag-purple { background: rgba(168, 85, 247, 0.1); color: var(--accent-secondary); }

/* Timeline Tags */
.tag-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag {
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 3px 8px;
    border-radius: 4px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
}

.timeline-item:hover .tag {
    color: var(--text-secondary);
    border-color: rgba(var(--accent-primary-rgb), 0.2);
}

/* Previous Companies engagements list */
.previous-companies {
    margin-top: var(--spacing-xl);
}

.previous-companies h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.previous-companies h3 i {
    width: 20px;
    height: 20px;
    color: var(--accent-primary);
}

.companies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.company-mini-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    border-radius: 8px;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.company-mini-card:hover {
    border-color: rgba(var(--accent-primary-rgb), 0.25);
    background: rgba(255, 255, 255, 0.02);
}

.company-mini-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
}

.company-mini-card .role {
    font-size: 0.85rem;
    color: var(--accent-cyan);
    font-weight: 600;
}

.company-mini-card .date {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    margin-bottom: 6px;
}

.company-mini-card .desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.project-card {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: var(--spacing-sm);
}

.project-title h3 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
}

.project-title .project-subtitle {
    font-size: 0.8rem;
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    margin-top: 2px;
}

/* QA build status widget */
.build-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 4px;
}

.status-passed {
    background: rgba(16, 185, 129, 0.08);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-green);
    border-radius: 50%;
}

.project-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
    line-height: 1.5;
}

/* Project QA Metrics Widget */
.project-qa-stats {
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 6px;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-mono);
}

.qa-stat {
    display: flex;
    flex-direction: column;
}

.qa-stat .label {
    font-size: 0.6rem;
    color: var(--text-muted);
}

.qa-stat .val {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ==========================================================================
   CERTIFICATIONS SECTION
   ========================================================================== */

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.cert-card {
    padding: var(--spacing-md);
    position: relative;
}

.cert-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(168, 85, 247, 0.08);
    border: 1px solid rgba(168, 85, 247, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-secondary);
}

.cert-card:hover .cert-icon {
    transform: rotate(15deg);
    transition: transform var(--transition-fast);
}

.cert-icon i {
    width: 20px;
    height: 20px;
}

.cert-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.cert-issuer {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-xs);
}

.cert-details {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--spacing-xl);
    align-items: start;
    margin-top: var(--spacing-lg);
}

.contact-info {
    position: sticky;
    top: 100px;
}

.contact-info .contact-card {
    padding: var(--spacing-lg);
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.contact-info .title {
    font-size: 0.95rem;
    font-family: var(--font-mono);
    color: var(--accent-cyan);
}

.contact-divider {
    border: none;
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-md) 0;
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(var(--accent-primary-rgb), 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.info-icon i {
    width: 18px;
    height: 18px;
}

.info-details {
    display: flex;
    flex-direction: column;
}

.info-details .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.info-details .val {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

.info-details a.val:hover {
    color: var(--accent-primary);
    text-decoration: underline;
}

.contact-actions {
    margin-top: var(--spacing-lg);
}

/* Contact Form Styling */
.contact-form {
    padding: var(--spacing-lg);
}

.contact-form h3 {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.form-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.15);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder, .form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(var(--accent-primary-rgb), 0.2);
}

/* Validation styling */
.form-group.invalid input, .form-group.invalid select, .form-group.invalid textarea {
    border-color: var(--accent-error);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.15);
}

.error-message {
    color: var(--accent-error);
    font-size: 0.75rem;
    margin-top: 4px;
    font-family: var(--font-mono);
    display: none;
}

.form-group.invalid .error-message {
    display: block;
}

/* Form Submit Button State overrides */
.submit-btn .btn-loading {
    display: none;
}

.submit-btn.loading .btn-text {
    display: none;
}

.submit-btn.loading .btn-loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.2);
    border-top: 2px solid #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Form Status alert */
.form-status {
    margin-top: var(--spacing-md);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-status.success {
    display: flex;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.form-status.success .status-success-icon { display: block; width: 16px; height: 16px; }
.form-status.success .status-error-icon { display: none; }

.form-status.error {
    display: flex;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--accent-error);
}

.form-status.error .status-success-icon { display: none; }
.form-status.error .status-error-icon { display: block; width: 16px; height: 16px; }

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
    background: rgba(3, 6, 12, 0.4);
    position: relative;
    z-index: 1;
}

.footer-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-brand {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.footer-meta {
    font-size: 0.85rem;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-md);
}

.footer-socials {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-socials a {
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-socials a:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background-color: rgba(var(--accent-primary-rgb), 0.05);
}

.footer-socials a i {
    width: 18px;
    height: 18px;
}

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

/* ==========================================================================
   ANIMATIONS & SCROLL BEHAVIOR
   ========================================================================== */

/* Intersection Observer animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.scroll-animate {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.scroll-animate.animated {
    opacity: 1;
    transform: translateY(0);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes pulse-dot {
    0% {
        transform: scale(0.9);
        box-shadow: 0 0 0 0 rgba(var(--accent-primary-rgb), 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 8px rgba(var(--accent-primary-rgb), 0);
    }
    100% {
        transform: scale(0.9);
        box-shadow: 0 0 0 0 rgba(var(--accent-primary-rgb), 0);
    }
}

@keyframes float-glow {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(60px, -40px) scale(1.1);
    }
}

@keyframes float-glow-reverse {
    0% {
        transform: translate(0, 0) scale(1.1);
    }
    100% {
        transform: translate(-70px, 50px) scale(0.9);
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 968px) {
    :root {
        --spacing-xxl: 5rem;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .hero-content {
        align-items: center;
    }

    .hero-name {
        font-size: 2.8rem;
    }

    .hero-ctas {
        justify-content: center;
    }
    
    .hero-meta {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-visual {
        order: -1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .contact-info {
        position: static;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-color);
        border-top: 1px solid var(--border-color);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-xl) 0;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-lg);
    }

    .nav-link {
        font-size: 1.15rem;
    }

    .navbar-actions .cv-download-btn span {
        display: none;
    }
    
    .navbar-actions .cv-download-btn {
        padding: 0.6rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .timeline {
        padding-left: 20px;
    }

    .timeline-dot {
        left: -25px;
        top: 25px;
    }

    .company-badge {
        flex-direction: column;
        gap: 2px;
    }

    .comp-name {
        font-size: 1.15rem;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2.2rem;
    }

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

    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }

    .hero-ctas .btn {
        width: 100%;
    }

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

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

/* ==========================================================================
   LANGUAGE TOGGLE DISPLAY RULES
   ========================================================================== */

body.lang-en .lang-es {
    display: none !important;
}

body.lang-es .lang-en {
    display: none !important;
}