/* ==========================================================================
   DEVELOPER PORTFOLIO - DESIGN SYSTEM & RULES
   ========================================================================== */

/* --- Design Tokens & Variables --- */
:root {
    /* Fonts */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Theme Tokens (Dark Default) */
    --bg-primary: #080c16;
    --bg-secondary: #0e1424;
    --bg-tertiary: #131c32;
    --bg-glass: rgba(14, 20, 36, 0.65);
    --border-glass: rgba(255, 255, 255, 0.07);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    
    --accent-primary: #10b981; /* Neon Emerald */
    --accent-secondary: #06b6d4; /* Cyber Cyan */
    --accent-tertiary: #8b5cf6; /* Cyber Violet */
    --accent-glow: rgba(16, 185, 129, 0.3);

    --gradient-hero: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
    --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
    
    /* Layout Tokens */
    --max-width: 1200px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Light Mode Tokens --- */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.75);
    --border-glass: rgba(0, 0, 0, 0.06);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    
    --accent-primary: #059669; /* Soft Emerald */
    --accent-secondary: #0891b2; /* Soft Cyan */
    --accent-tertiary: #7c3aed; /* Soft Violet */
    --accent-glow: rgba(5, 150, 105, 0.15);

    --gradient-hero: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
    --gradient-card: linear-gradient(135deg, rgba(0, 0, 0, 0.01) 0%, rgba(0, 0, 0, 0.02) 100%);
}

/* ==========================================================================
   CSS RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    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, textarea {
    font-family: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

button {
    cursor: pointer;
}

img, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ==========================================================================
   COMMON UTILITIES & STRUCTURAL COMPONENTS
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
    transform-style: preserve-3d;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary), var(--accent-primary));
    background-size: 300% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 6s linear infinite;
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header .subtitle {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-primary);
    display: block;
    margin-bottom: 8px;
}

.section-header .title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.section-header .title-underline {
    width: 60px;
    height: 4px;
    background: var(--gradient-hero);
    border-radius: 2px;
    margin: 16px auto 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    gap: 8px;
}

.btn-primary {
    background: var(--gradient-hero);
    color: #ffffff;
    box-shadow: 0 4px 20px var(--accent-glow);
    animation: pulse-glow 3s infinite;
}

@keyframes pulse-glow {
    0% { box-shadow: 0 4px 20px var(--accent-glow); }
    50% { box-shadow: 0 4px 35px var(--accent-glow); transform: scale(1.02); }
    100% { box-shadow: 0 4px 20px var(--accent-glow); }
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--accent-glow);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
    border-color: var(--text-secondary);
}

.btn-whatsapp {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.3) !important;
    color: #10b981 !important;
}
.btn-whatsapp:hover {
    background: rgba(16, 185, 129, 0.15);
    border-color: #10b981 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.15);
}

.btn-calendly {
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.3) !important;
    color: #06b6d4 !important;
}
.btn-calendly:hover {
    background: rgba(6, 182, 212, 0.15);
    border-color: #06b6d4 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.15);
}

.btn-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}
.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* ==========================================================================
   DYNAMIC BACKGROUND BLOB ANIMATIONS
   ========================================================================== */
.glow-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100%;
    width: 100%;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    mix-blend-mode: screen;
    animation: blob-float 20s infinite alternate;
}

[data-theme="light"] .blob {
    opacity: 0.08;
    mix-blend-mode: multiply;
    filter: blur(120px);
}

.blob-1 {
    background: var(--accent-primary);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.blob-2 {
    background: var(--accent-secondary);
    bottom: 10%;
    right: -100px;
    animation-delay: 5s;
}

.blob-3 {
    background: var(--accent-tertiary);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes blob-float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(60px, -40px) scale(1.1); }
    100% { transform: translate(-30px, 50px) scale(0.9); }
}

/* ==========================================================================
   NAVIGATION HEADER
   ========================================================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(8, 12, 22, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
    z-index: 100;
    transition: all var(--transition-normal);
}

[data-theme="light"] .main-header {
    background: rgba(248, 250, 252, 0.4);
}

.main-header.scrolled {
    height: 70px;
    background: rgba(8, 12, 22, 0.85);
    box-shadow: var(--shadow-md);
}

[data-theme="light"] .main-header.scrolled {
    background: rgba(255, 255, 255, 0.85);
}

.header-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}
.logo-accent {
    color: var(--accent-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-hero);
    transition: width var(--transition-normal);
}
.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}
.nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Theme Toggle Button */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}
.theme-toggle:hover {
    transform: scale(1.05);
    background: rgba(255, 255, 255, 0.05);
}
.icon {
    width: 20px;
    height: 20px;
}
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
}
.bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--header-height);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: 60px;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

.hero-badge {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--accent-primary);
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 24px;
    display: inline-block;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    opacity: 0;
    animation: fade-up-hero 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.typing-text {
    position: relative;
    color: var(--accent-secondary);
}
.typing-text::after {
    content: '|';
    position: absolute;
    right: -8px;
    animation: cursor-blink 0.8s infinite;
}

@keyframes cursor-blink {
    50% { opacity: 0; }
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 540px;
    opacity: 0;
    animation: fade-up-hero 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.15s;
}

.hero-ctas {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
    opacity: 0;
    animation: fade-up-hero 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.3s;
    width: 100%;
}

.hero-contact-row {
    display: flex;
    gap: 12px;
    width: 100%;
    max-width: 340px;
}

@keyframes fade-up-hero {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Visual Graphic */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.visual-container {
    position: relative;
    width: 320px;
    height: 320px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.avatar-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px dashed rgba(255, 255, 255, 0.05);
    animation: spin 30s linear infinite;
}

[data-theme="light"] .avatar-ring {
    border-color: rgba(0, 0, 0, 0.03);
}

.ring-1 {
    width: 100%;
    height: 100%;
    animation-duration: 40s;
}
.ring-2 {
    width: 80%;
    height: 80%;
    border-style: solid;
    border-color: var(--border-glass);
    animation-direction: reverse;
    animation-duration: 25s;
}
.ring-3 {
    width: 60%;
    height: 60%;
    border-color: var(--accent-primary);
    opacity: 0.3;
}

.profile-card {
    position: absolute;
    width: 320px;
    padding: 20px;
    animation: float 6s ease-in-out infinite;
    transform-style: preserve-3d;
}

.card-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 8px;
}

.code-editor {
    background: #050811;
    border-radius: var(--radius-sm);
    padding: 14px;
    font-family: monospace;
    font-size: 0.8rem;
    line-height: 1.5;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.8);
    overflow-x: auto;
}

.editor-header {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
}
.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.red { background: #ef4444; }
.yellow { background: #f59e0b; }
.green { background: #10b981; }

.keyword { color: #f472b6; }
.string { color: #34d399; }

@keyframes spin {
    100% { transform: rotate(360deg); }
}

@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(2deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

/* Scroll Down Mouse */
.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}
.mouse-icon {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border-glass);
    border-radius: 100px;
    position: relative;
}
.wheel {
    width: 4px;
    height: 8px;
    background-color: var(--accent-primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 1.6s infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; top: 8px; }
    50% { opacity: 0.3; top: 18px; }
    100% { opacity: 1; top: 8px; }
}

/* ==========================================================================
   ABOUT ME SECTION
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: stretch;
}

.about-info {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about-heading {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.98rem;
}
.about-text:last-of-type {
    margin-bottom: 36px;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    border-top: 1px solid var(--border-glass);
    padding-top: 30px;
}

.stat-card {
    text-align: center;
}
.stat-num {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--accent-primary);
    display: block;
    line-height: 1.1;
    margin-bottom: 6px;
}
.stat-num.text-badge {
    font-size: 1.25rem;
    padding-top: 10px;
    min-height: 44px;
}
.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* Feature Cards */
.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
}
.feature-card:hover {
    transform: translateX(8px);
    border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="light"] .feature-card:hover {
    border-color: rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    flex-shrink: 0;
}
.frontend-gradient { background: linear-gradient(135deg, #10b981, #06b6d4); }
.backend-gradient { background: linear-gradient(135deg, #3b82f6, #8b5cf6); }
.opt-gradient { background: linear-gradient(135deg, #f59e0b, #ef4444); }

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}
.feature-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.skills-card {
    padding: 30px;
}
.skills-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
}

.skills-card-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.title-bullet {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-primary);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}
.skill-name {
    color: var(--text-primary);
}

.skill-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
}

[data-theme="light"] .skill-bar-bg {
    background: rgba(0, 0, 0, 0.05);
}

.skill-bar-fill {
    height: 100%;
    background: var(--gradient-hero);
    border-radius: 10px;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* ==========================================================================
   PROJECTS SHOWCASE SECTION
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    border: 1px solid var(--border-glass);
    background: rgba(255, 255, 255, 0.01);
    transition: all var(--transition-fast);
}
.filter-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}
.filter-btn.active {
    background: var(--gradient-hero);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-sm);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    transition: all var(--transition-normal);
}

.project-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow-lg);
}

.project-img-wrapper {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    border-bottom: 1px solid var(--border-glass);
}

.project-placeholder-img {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-normal);
}
.project-card:hover .project-placeholder-img {
    transform: scale(1.05);
}

.bhagyakosh-bg {
    background: linear-gradient(135deg, #1e1b4b 0%, #311005 100%);
}
.ruview-bg {
    background: linear-gradient(135deg, #022c22 0%, #111827 100%);
}
.himali-bg {
    background: linear-gradient(135deg, #075985 0%, #0f172a 100%);
}

.project-floating-overlay {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.deity-om {
    font-size: 3.5rem;
    font-weight: 700;
    color: #f59e0b;
    line-height: 1;
    text-shadow: 0 0 20px rgba(245, 158, 11, 0.4);
    animation: pulse-glow 3s infinite ease-in-out;
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); filter: brightness(1); }
    50% { transform: scale(1.05); filter: brightness(1.2); }
}

.wifi-radar {
    width: 60px;
    height: 60px;
    color: var(--accent-primary);
    animation: radar-sweep 2s infinite linear;
}

@keyframes radar-sweep {
    0% { transform: scale(0.9); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.7; }
}

.mountain-icon {
    width: 60px;
    height: 60px;
    color: #38bdf8;
    filter: drop-shadow(0 0 10px rgba(56, 189, 248, 0.3));
}

.project-logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.project-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-meta {
    margin-bottom: 12px;
}
.project-cat {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 10px;
}
.project-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.badge {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    padding: 3px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 4px;
    color: var(--text-secondary);
}

[data-theme="light"] .badge {
    background: rgba(0, 0, 0, 0.02);
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}
.project-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
    flex-grow: 1;
}

.project-links {
    margin-top: auto;
}
.project-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.link-arrow {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}
.project-link:hover {
    color: var(--accent-primary);
}
.project-link:hover .link-arrow {
    transform: translate(2px, -2px);
}

.project-link-disabled {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-tertiary);
    cursor: default;
}

/* ==========================================================================
   EXPERIENCE TIMELINE SECTION
   ========================================================================== */
.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 32px;
}
.timeline-container::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    width: 2px;
    height: calc(100% - 16px);
    background: var(--border-glass);
}

.timeline-item {
    position: relative;
    padding: 30px;
    margin-bottom: 40px;
}
.timeline-item:last-child {
    margin-bottom: 0;
}
.timeline-item:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

.timeline-dot {
    position: absolute;
    top: 36px;
    left: -32px;
    transform: translateX(-50%);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 3px solid var(--accent-primary);
    transition: background-color var(--transition-fast);
    z-index: 2;
}
.timeline-item:hover .timeline-dot {
    background-color: var(--accent-primary);
}

.timeline-date {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-subtitle {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.timeline-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 40px;
    align-items: stretch;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card-info {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
}
.contact-card-info:hover {
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.contact-card-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

[data-theme="light"] .contact-card-icon {
    background: rgba(0, 0, 0, 0.02);
}

.contact-card-icon svg {
    width: 22px;
    height: 22px;
}

.contact-card-title {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.contact-card-link, .contact-card-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}
.contact-card-link:hover {
    color: var(--accent-primary);
}

/* Contact Form */
.contact-form-wrapper {
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
    transition: opacity var(--transition-normal);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    position: relative;
    display: flex;
    flex-direction: column;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: all var(--transition-normal);
}

[data-theme="light"] .form-input {
    background: rgba(0, 0, 0, 0.01);
}

.form-input:focus {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.1);
}

[data-theme="light"] .form-input:focus {
    background: #ffffff;
}

.textarea-input {
    resize: none;
}

/* Floating Label Animation */
.form-label {
    position: absolute;
    left: 16px;
    top: 14px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    pointer-events: none;
    transition: transform var(--transition-fast), font-size var(--transition-fast), color var(--transition-fast);
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
    transform: translate(-10px, -28px) scale(0.85);
    color: var(--accent-primary);
}

.form-submit-btn {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
}

/* Form Submit Status */
.form-status {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 40px;
    z-index: 5;
    animation: fadeIn var(--transition-normal) forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.status-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    max-width: 360px;
}

.status-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.08);
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
    box-shadow: 0 0 20px var(--accent-glow);
}

.status-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}
.status-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.main-footer {
    border-top: 1px solid var(--border-glass);
    padding: 30px 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

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

.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a:hover {
    color: var(--text-primary);
}

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

/* Tablet & Smaller Layouts */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid, .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-info {
        padding: 30px;
    }
}

/* Mobile & Portrait Layouts */
@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-header .title {
        font-size: 2rem;
    }
    
    /* Header & Mobile Toggle */
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        gap: 36px;
        transition: left var(--transition-normal);
        border-top: 1px solid var(--border-glass);
        z-index: 99;
    }
    
    .nav-menu.open {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.25rem;
    }
    
    /* Mobile Menu Open Animation */
    .mobile-menu-btn.open .bar-1 {
        transform: translateY(9px) rotate(45deg);
    }
    .mobile-menu-btn.open .bar-2 {
        opacity: 0;
    }
    .mobile-menu-btn.open .bar-3 {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* Hero Section */
    .hero {
        padding-top: 150px; /* Increased to push hero content down below navigation */
        padding-bottom: 60px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-subtitle {
        margin: 0 auto 30px auto;
    }
    
    .hero-ctas {
        align-items: center;
    }
    
    .hero-visual {
        order: -1;
        margin-top: 30px;
        margin-bottom: 30px;
    }
    
    .scroll-down {
        display: none;
    }

    /* Skills & Projects */
    .skills-grid, .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .contact-form-wrapper {
        padding: 30px 20px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* ==========================================================================
   INTERACTIVE BOOKING MODAL WIDGET
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(4, 6, 12, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.open {
    display: flex;
}

.modal-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.8rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}
.modal-close:hover {
    color: var(--text-primary);
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.modal-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.5;
}

.booking-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.section-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
}

.date-slots-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
}

.date-slot-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 10px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.date-slot-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--text-secondary);
}

.date-slot-btn.selected {
    background: var(--gradient-hero);
    border-color: transparent;
    color: #ffffff;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.day-lbl {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}
.date-slot-btn.selected .day-lbl {
    color: rgba(255, 255, 255, 0.8);
}

.day-val {
    font-size: 1.15rem;
    font-weight: 800;
    margin: 2px 0;
}

.month-lbl {
    font-size: 0.65rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
}
.date-slot-btn.selected .month-lbl {
    color: rgba(255, 255, 255, 0.8);
}

.time-slots-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.time-slot-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 10px 0;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.time-slot-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--text-secondary);
}

.time-slot-btn.selected {
    background: var(--gradient-hero);
    border-color: transparent;
    color: #ffffff;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: static;
}

.modal-form .form-label {
    position: static;
    transform: none !important;
    pointer-events: auto;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.modal-form .form-input {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 12px;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    width: 100%;
}

.form-input:focus {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.1);
}

.hidden {
    display: none !important;
}