/* ==========================================================================
   Design System — Muhammad Bilal Portfolio (Signal Concept)
   ========================================================================== */

:root {
    /* Color Palette - "Signal" Palette */
    --bg-primary: #0A0E17;     /* Void */
    --bg-secondary: #121A2B;   /* Depth */
    --border-color: #22293B;   /* Line */
    --bg-header: rgba(10, 14, 23, 0.75); /* Dark Frosted Glass */
    --hero-overlay: linear-gradient(180deg, rgba(10, 14, 23, 0.3) 0%, #0A0E17 100%);
    --mobile-menu-bg: rgba(10, 14, 23, 0.95);
    --modal-overlay-bg: rgba(10, 14, 23, 0.7);
    
    --primary: #34E7C4;        /* Signal - Detections, Active states */
    --primary-rgb: 52, 231, 196;
    --secondary: #7C6CFF;      /* Pulse - Headings emphasis, process */
    --secondary-rgb: 124, 108, 255;
    --accent: #ff6b8b;
    
    --text-primary: #EEF1F8;   /* Bone */
    --text-secondary: #8891A7; /* Ash */
    --text-muted: #5e687e;
    
    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Layout & Motion */
    --transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    --shadow-color: rgba(0, 0, 0, 0.6);
    --gradient-hero: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

body.light-theme {
    /* Color Palette - Light "Signal" Palette overrides */
    --bg-primary: #F4F6FA;      /* Light Void */
    --bg-secondary: #FFFFFF;    /* Light Depth */
    --border-color: #E1E5EB;    /* Light Line */
    --bg-header: rgba(244, 246, 250, 0.75); /* Light Frosted Glass */
    --hero-overlay: linear-gradient(180deg, rgba(244, 246, 250, 0.3) 0%, #F4F6FA 100%);
    --mobile-menu-bg: rgba(244, 246, 250, 0.95);
    --modal-overlay-bg: rgba(244, 246, 250, 0.7);
    
    --primary: #00A389;         /* High-contrast Signal Teal */
    --primary-rgb: 0, 163, 137;
    --secondary: #5B4AE3;       /* High-contrast Pulse Violet */
    --secondary-rgb: 91, 74, 227;
    
    --text-primary: #0A0E17;    /* Dark Void as text */
    --text-secondary: #4A5568;  /* Muted dark text */
    --text-muted: #7A8B9E;
    
    --shadow-color: rgba(10, 14, 23, 0.08);
}

/* ==========================================================================
   Base Elements
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

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

ul {
    list-style: none;
}

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
    border: none;
    background: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient-hero);
    width: 0%;
    z-index: 1000;
}

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

/* Section Common Styles */
section {
    padding: 120px 0;
    position: relative;
}

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

.section-subtitle {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--secondary);
    display: inline-block;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.title-underline {
    width: 40px;
    height: 3px;
    background: var(--primary);
    margin-top: 14px;
    border-radius: var(--border-radius-sm);
}

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

/* Accessibility Focus Ring */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    gap: 8px;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(var(--primary-rgb), 0.3);
}

.btn-outline {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-header);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
    padding: 24px 0;
}

.header.scrolled {
    padding: 16px 0;
    box-shadow: 0 10px 30px var(--shadow-color);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.logo-accent {
    color: var(--primary);
}

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

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

.nav-link {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1rem;
    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(--primary);
    transition: var(--transition);
}

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

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

.btn-contact {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.availability-chip {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary);
    background: rgba(var(--primary-rgb), 0.06);
    border: 1px solid rgba(var(--primary-rgb), 0.2);
    padding: 6px 14px;
    border-radius: 50px;
    display: inline-block;
}

.mobile-menu-btn {
    display: none;
    font-size: 20px;
    color: var(--text-primary);
    cursor: pointer;
}

/* Mobile Overlay Menu */
.mobile-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--mobile-menu-bg);
    backdrop-filter: blur(16px);
    z-index: 1000;
    transition: right 0.4s cubic-bezier(0.77, 0.2, 0.05, 1);
}

.mobile-overlay.active {
    right: 0;
}

.mobile-menu-container {
    width: 80%;
    max-width: 320px;
    height: 100%;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    margin-left: auto;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.mobile-menu-close {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
}

.mobile-nav-list {
    margin-top: 60px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mobile-nav-link {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
}

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

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 140px;
    padding-bottom: 100px;
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--hero-overlay);
    z-index: 2;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 3;
}

.hero-content {
    text-align: left;
    max-width: 680px;
}

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--secondary);
    display: inline-block;
    margin-bottom: 16px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.75rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

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

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

/* Floating Status Card Readout */
.status-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    box-shadow: 0 15px 35px var(--shadow-color);
    min-width: 280px;
    justify-self: end;
    align-self: end;
    margin-bottom: 20px;
}


.status-readout {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.status-label {
    color: var(--text-secondary);
}

.status-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about {
    background-color: transparent;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.about-heading {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 24px;
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.6;
}

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

.about-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}

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

.detail-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.detail-val {
    font-weight: 600;
    color: var(--text-primary);
}

.detail-val a:hover {
    color: var(--primary);
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(var(--primary-rgb), 0.06);
}

.stat-icon {
    font-size: 24px;
    color: var(--secondary);
    margin-bottom: 20px;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.stat-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills {
    background-color: transparent;
}

.skills-filter-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 48px;
    align-items: flex-start;
}

.skills-search-wrapper {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.skills-search-wrapper input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: var(--transition);
}

.skills-search-wrapper input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 12px rgba(var(--primary-rgb), 0.1);
}

.search-icon {
    position: absolute;
    top: 50%;
    left: 18px;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 16px;
}

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

.skills-tab-btn {
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition);
}

.skills-tab-btn:hover, .skills-tab-btn.active {
    background: var(--primary);
    color: var(--bg-primary);
    border-color: transparent;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.skill-pill {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 16px 20px;
    border-radius: var(--border-radius-md);
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: opacity 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}

.skill-pill.hidden {
    opacity: 0.15;
    transform: scale(0.95);
    pointer-events: none;
}

.skill-pill:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.skill-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.skill-level {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Projects Bento Layout
   ========================================================================== */
.projects {
    background-color: transparent;
}

.project-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 10px 20px;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    color: var(--bg-primary);
    border-color: transparent;
}

/* Bento grid layouts */
.projects-bento-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.projects-sub-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 12px 30px rgba(var(--primary-rgb), 0.12);
}

.project-card-image {
    height: 220px;
    width: 100%;
    overflow: hidden;
    position: relative;
    background-color: var(--bg-primary);
}

.project-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-card-title-fallback {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    user-select: none;
}

.project-card-title-fallback::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 16px 16px;
    opacity: 0.35;
    pointer-events: none;
    transition: var(--transition);
}

.project-card.featured .project-card-title-fallback {
    font-size: 2.5rem;
}

.project-card:hover .project-card-title-fallback {
    color: var(--primary);
    background: linear-gradient(135deg, var(--border-color) 0%, var(--bg-secondary) 100%);
}

.project-card:hover .project-card-title-fallback::before {
    opacity: 0.7;
    transform: scale(1.05);
}

.project-card-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(10, 14, 23, 0.85);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(4px);
    color: var(--primary);
    z-index: 2;
}

body.light-theme .project-card-tag {
    color: #FFFFFF;
}

.project-card-content {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.project-card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
    flex-grow: 1;
}

.project-card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.project-card-tech span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    background-color: var(--bg-primary);
    color: var(--secondary);
    padding: 4px 10px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.btn-project-detail {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    cursor: pointer;
    align-self: flex-start;
    padding: 4px 0;
    border-bottom: 1px solid transparent;
    margin-top: auto;
}

.btn-project-detail:hover {
    border-color: var(--primary);
}

.btn-project-detail i {
    transition: transform 0.3s ease;
}

.btn-project-detail:hover i {
    transform: translateX(4px);
}

/* Featured Project Card Styles (BrainCare+) */
.project-card.featured {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
}

.project-card.featured .project-card-image {
    height: 100%;
    min-height: 380px;
}

.project-card.featured .project-card-content {
    padding: 40px;
}

.project-card.featured .project-card-title {
    font-size: 2rem;
}

.project-card.featured .project-card-desc {
    font-size: 1.05rem;
    line-height: 1.6;
}

.project-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--secondary);
    margin-bottom: 12px;
}

/* ==========================================================================
   Experience Section (Log Entries)
   ========================================================================== */
.experience {
    background-color: transparent;
}

.log-container {
    display: flex;
    flex-direction: column;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}

.log-entry {
    display: grid;
    grid-template-columns: 0.3fr 0.7fr;
    gap: 40px;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
}

.log-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-family: var(--font-mono);
}

.log-timestamp {
    font-size: 0.75rem;
    color: var(--secondary);
    letter-spacing: 0.05em;
}

.log-date {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 600;
}

.log-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.log-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

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

.log-org {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--primary);
    letter-spacing: 0.08em;
    font-weight: 600;
}

.log-lead {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.log-bullets {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: 18px;
    list-style-type: square;
}

.log-bullets li {
    margin-bottom: 12px;
}

.log-tech {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.log-tech .label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--secondary);
    letter-spacing: 0.08em;
    font-weight: 600;
}

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

.tech-pills span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    background: rgba(var(--secondary-rgb), 0.05);
    border: 1px solid rgba(var(--secondary-rgb), 0.2);
    color: var(--secondary);
    padding: 3px 8px;
    border-radius: var(--border-radius-sm);
}

/* ==========================================================================
   Contact Section (Direct Connections)
   ========================================================================== */
.contact {
    background-color: transparent;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 50px;
    max-width: 1100px;
    margin: 0 auto;
    align-items: flex-start;
}

.contact-message {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.6;
}

.contact-links-grid-vertical {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-link-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: var(--transition);
}

.contact-link-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(var(--primary-rgb), 0.05);
}

.card-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--secondary);
    letter-spacing: 0.08em;
    font-weight: 600;
}

.card-val {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    word-break: break-all;
}

/* Contact Form */
.contact-form-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: 0 15px 35px var(--shadow-color);
}

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

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group .required {
    color: var(--accent);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(var(--primary-rgb), 0.15);
}

.btn-submit {
    width: 100%;
    margin-top: 8px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: transparent;
    border-top: 1px solid var(--border-color);
    padding: 80px 0 30px;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

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

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 320px;
}

.footer-links h4, .footer-socials-col h4 {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.footer-socials {
    display: flex;
    gap: 12px;
}

.footer-socials a {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-sm);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.footer-socials a:hover {
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
}

.text-center {
    text-align: center;
}

/* ==========================================================================
   Case Study Modal Overlay
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-overlay-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    padding: 24px;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow-y: auto;
    transform: translateY(30px) scale(0.95);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.modal-overlay.active .modal-container {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: rotate(90deg);
}

.modal-content {
    padding: 50px;
}

/* Modal Content Details */
.modal-header-section {
    margin-bottom: 30px;
}

.modal-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary);
    margin-bottom: 8px;
    display: inline-block;
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.modal-hero-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    margin-bottom: 40px;
    align-items: center;
}

.modal-body-left {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.modal-body-right {
    display: flex;
    justify-content: center;
}

.modal-media-box {
    width: 250px;
    height: 480px;
    background-color: var(--bg-primary);
    border: 8px solid var(--border-color);
    border-radius: 35px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    overflow: hidden;
    position: relative;
}

.modal-media-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-section-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
    color: var(--text-primary);
}

.modal-desc-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.modal-tech-list span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--bg-primary);
    color: var(--primary);
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.modal-bullets-list {
    list-style: none;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-bullets-list li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.modal-bullets-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 18px;
    top: -2px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Medium/Large Devices (Tablets, Less than 992px) */
@media (max-width: 992px) {
    .projects-sub-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small Devices (Mobile view, Less than 720px) */
@media (max-width: 720px) {
    section {
        padding: 80px 0;
    }
    
    .hero {
        padding-top: 120px;
        min-height: auto;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .status-card {
        justify-self: start;
        align-self: start;
        width: 100%;
        margin-top: 20px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-details {
        grid-template-columns: 1fr;
    }
    
    .projects-sub-grid {
        grid-template-columns: 1fr;
    }
    
    .log-entry {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form-panel {
        padding: 30px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        display: none;
    }
    
    .availability-chip {
        display: none; /* Hide availability chip on navbar inside mobile view to avoid overflow */
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .modal-hero-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .modal-body-right {
        order: -1;
    }
    
    .modal-media-box {
        height: 380px;
        width: 200px;
    }
}