/* ==========================================================================
   DESIGN SYSTEM & CONSTANTS (CSS VARIABLES)
   ========================================================================== */
:root {
    /* Fonts */
    --ff-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --ff-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --ff-mono: 'Fira Code', monospace;

    /* Base Palette (Dark Theme Defaults) */
    --bg-dark-obsidian: #05070a;
    --bg-dark-slate: #0b0f17;
    --bg-glass-card: rgba(13, 20, 32, 0.45);
    --bg-glass-hover: rgba(22, 34, 54, 0.55);
    --border-glass: rgba(255, 255, 255, 0.06);
    --border-glass-hover: rgba(255, 255, 255, 0.15);

    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    /* 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);
}

/* Theme Mappings */
.theme-software {
    --accent-color: #3b82f6;          /* Cyber Blue */
    --accent-rgb: 59, 130, 246;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --bg-ambient-1: rgba(59, 130, 246, 0.12);
    --bg-ambient-2: rgba(99, 102, 241, 0.08); /* Indigo */
}

.theme-devops {
    --accent-color: #f59e0b;          /* Solar Orange/Amber */
    --accent-rgb: 245, 158, 11;
    --accent-glow: rgba(245, 158, 11, 0.4);
    --bg-ambient-1: rgba(245, 158, 11, 0.12);
    --bg-ambient-2: rgba(239, 68, 68, 0.08);  /* Red */
}

.theme-edtech {
    --accent-color: #10b981;          /* Radiant Emerald */
    --accent-rgb: 16, 185, 129;
    --accent-glow: rgba(16, 185, 129, 0.4);
    --bg-ambient-1: rgba(16, 185, 129, 0.12);
    --bg-ambient-2: rgba(6, 182, 212, 0.08);  /* Cyan */
}

.theme-art {
    --accent-color: #ec4899;          /* Neon Pink */
    --accent-rgb: 236, 72, 153;
    --accent-glow: rgba(236, 72, 153, 0.4);
    --bg-ambient-1: rgba(236, 72, 153, 0.12);
    --bg-ambient-2: rgba(168, 85, 247, 0.08); /* Purple */
}

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

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

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

a {
    color: inherit;
    text-decoration: none;
}

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

/* ==========================================================================
   BACKGROUNDS & DECORATIONS
   ========================================================================== */
#bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    pointer-events: none;
}

.glow-blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.65;
    transition: background var(--transition-slow), transform var(--transition-slow);
}

.blob-1 {
    top: -10%;
    right: 5%;
    width: 50vw;
    height: 50vw;
    background: var(--bg-ambient-1);
    transform: translate(10%, -10%);
}

.blob-2 {
    bottom: -10%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: var(--bg-ambient-2);
    transform: translate(-10%, 10%);
}

.blob-3 {
    top: 40%;
    left: 45%;
    width: 35vw;
    height: 35vw;
    background: rgba(var(--accent-rgb), 0.04);
}

/* ==========================================================================
   NAVBAR & HEADER
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(5, 7, 10, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
    transition: border-bottom var(--transition-normal);
}

.header-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 0.25rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-fast), background-color var(--transition-normal);
}

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

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

.nav-btn-customize {
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    background: rgba(var(--accent-rgb), 0.15);
    border: 1px solid rgba(var(--accent-rgb), 0.3);
    color: var(--accent-color);
}

.nav-btn-customize::after {
    display: none;
}

.nav-btn-customize:hover {
    background: var(--accent-color);
    color: #000 !important;
}

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

/* Mobile Nav Menu */
.mobile-nav {
    display: none;
    position: fixed;
    top: 73px;
    left: 0;
    width: 100%;
    height: calc(100vh - 73px);
    background: rgba(5, 7, 10, 0.95);
    backdrop-filter: blur(20px);
    z-index: 99;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.mobile-nav.open {
    opacity: 1;
    pointer-events: all;
    display: flex;
}

.mobile-nav-link {
    font-family: var(--ff-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

/* ==========================================================================
   REUSABLE UTILITIES & COMPONENTS
   ========================================================================== */
.glass-card {
    background: var(--bg-glass-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    transition: border var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

.glass-card:hover {
    border: 1px solid var(--border-glass-hover);
    background: var(--bg-glass-hover);
}

.badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--accent-color);
    background: rgba(var(--accent-rgb), 0.12);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    transition: color var(--transition-normal), background var(--transition-normal), border var(--transition-normal);
}

.gradient-text {
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: background var(--transition-slow);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #000;
    box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(var(--accent-rgb), 0.45);
    transform: translateY(-2px);
}

.btn-secondary {
    border: 1px solid var(--border-glass-hover);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.btn-secondary:hover {
    border-color: var(--accent-color);
    background: rgba(var(--accent-rgb), 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.15);
}

.btn-danger {
    background-color: #ef4444 !important;
    color: #fff !important;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.25);
}

.btn-danger:hover {
    box-shadow: 0 6px 30px rgba(239, 68, 68, 0.45) !important;
}

.btn-small {
    padding: 0.45rem 1.1rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

/* Common Section Headers */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem auto;
}

.section-title {
    font-family: var(--ff-heading);
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem 2rem 4rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

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

.hero-title {
    font-family: var(--ff-heading);
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-family: var(--ff-heading);
    font-size: 1.35rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 580px;
    margin-bottom: 2.5rem;
}

.hero-ctas {
    display: flex;
    gap: 1.5rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    position: relative;
}

.hero-image-container {
    padding: 1rem;
    border-radius: 20px;
    position: relative;
    max-width: 420px;
    width: 100%;
}

.glowing-border {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 20px;
    border: 2px solid rgba(var(--accent-rgb), 0.2);
    pointer-events: none;
    box-shadow: inset 0 0 20px rgba(var(--accent-rgb), 0.1);
    transition: all var(--transition-normal);
}

.glass-card:hover .glowing-border {
    border-color: var(--accent-color);
    box-shadow: inset 0 0 30px rgba(var(--accent-rgb), 0.2), 0 0 30px rgba(var(--accent-rgb), 0.25);
}

/* Slideshow style */
.slideshow-frame {
    width: 100%;
    height: 380px;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    background: #020305;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

.slideshow-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding: 0 0.5rem;
}

.slide-ctrl-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slide-ctrl-btn:hover {
    background: rgba(var(--accent-rgb), 0.2);
    border-color: var(--accent-color);
    color: var(--text-primary);
}

.slide-indicators {
    display: flex;
    gap: 0.5rem;
}

.slide-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slide-dot.active {
    background: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-color);
    width: 16px;
    border-radius: 4px;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.6;
}

.scroll-mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 20px;
    position: relative;
    display: block;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel-anim 1.6s infinite;
}

.scroll-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
}

@keyframes scroll-wheel-anim {
    0% { top: 6px; opacity: 1; }
    50% { top: 18px; opacity: 0; }
    100% { top: 6px; opacity: 1; }
}

/* ==========================================================================
   SPECIALIZATIONS SECTIONS
   ========================================================================== */
.pillars-section {
    padding: 6rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
}

.specializations-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.pillar-card {
    height: 190px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--border-glass);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    background: var(--bg-glass-card);
}

.pillar-card-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    filter: brightness(0.2) blur(1px);
    transition: all var(--transition-normal);
    z-index: 1;
}

.pillar-card-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to top, rgba(5, 7, 10, 0.9) 20%, rgba(5, 7, 10, 0.4));
    z-index: 2;
}

.pillar-card-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    font-size: 1.15rem;
    z-index: 3;
    transition: all var(--transition-normal);
}

.pillar-card-title {
    font-family: var(--ff-heading);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    margin-bottom: 0.4rem;
    z-index: 3;
    transition: color var(--transition-normal);
}

.pillar-card-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    z-index: 3;
    opacity: 0.8;
}

.pillar-card-action {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all var(--transition-normal);
}

.pillar-card-border {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: 16px;
    border: 2px solid transparent;
    pointer-events: none;
    z-index: 4;
    transition: all var(--transition-normal);
}

/* Card Hover and Active States */
.pillar-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.pillar-card:hover .pillar-card-bg {
    filter: brightness(0.35);
    transform: scale(1.03);
}

.pillar-card:hover .pillar-card-icon {
    background: rgba(var(--accent-rgb), 0.2);
    border-color: rgba(var(--accent-rgb), 0.4);
    color: var(--accent-color);
}

.pillar-card.active {
    box-shadow: 0 10px 30px rgba(var(--accent-rgb), 0.2);
}

.pillar-card.active .pillar-card-border {
    border-color: var(--accent-color);
}

.pillar-card.active .pillar-card-title {
    color: var(--accent-color);
}

.pillar-card.active .pillar-card-icon {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #000;
}

/* ==========================================================================
   SPECIALIZATION PANELS
   ========================================================================== */
.pillar-display-container {
    padding: 3.5rem;
    position: relative;
    overflow: hidden;
}

.pillar-panel {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-normal) ease, transform var(--transition-normal) ease;
}

.pillar-panel.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.panel-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.panel-title {
    font-family: var(--ff-heading);
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--accent-color);
}

.panel-summary {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1.25rem;
}

.feature-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--accent-rgb), 0.08);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    color: var(--accent-color);
    font-size: 1.1rem;
}

.feature-item h4 {
    font-family: var(--ff-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.spec-mock-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.spec-mock-visual img {
    max-width: 100%;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
    filter: brightness(0.8);
}

/* ==========================================================================
   SKILLS & TECHNOLOGIES
   ========================================================================== */
.skills-section {
    padding: 6rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
}

.skills-container-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.skills-column {
    padding: 2.5rem;
}

.skills-column-title {
    font-family: var(--ff-heading);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skills-column-title i {
    color: var(--accent-color);
}

.skills-tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.languages-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.lang-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1.25rem;
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
}

.lang-name {
    font-weight: 600;
}

.lang-level {
    font-size: 0.85rem;
    color: var(--accent-color);
    background: rgba(var(--accent-rgb), 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
    border: 1px solid rgba(var(--accent-rgb), 0.2);
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects-section {
    padding: 6rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.project-card {
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-img-wrapper {
    height: 200px;
    width: 100%;
    position: relative;
    overflow: hidden;
    background: #000;
}

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

.project-card:hover .project-img-wrapper img {
    transform: scale(1.05);
}

.project-card-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-family: var(--ff-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255,255,255,0.04);
    padding-top: 1.25rem;
    margin-top: auto;
}

.project-link-icon {
    font-size: 1.1rem;
    color: var(--accent-color);
    transition: color var(--transition-fast);
}

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

/* ==========================================================================
   CERTIFICATES SECTION
   ========================================================================== */
.certificates-section {
    padding: 6rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.certificate-card {
    padding: 2rem;
    position: relative;
    display: flex;
    flex-direction: column;
}

.cert-icon {
    font-size: 2.25rem;
    color: var(--accent-color);
    margin-bottom: 1.25rem;
}

.cert-title {
    font-family: var(--ff-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.cert-issuer {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.cert-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-top: 1px solid rgba(255,255,255,0.04);
    padding-top: 1rem;
}

.cert-link {
    color: var(--accent-color);
    font-weight: 600;
}

/* ==========================================================================
   TIMELINE PAGE & TOGGLES
   ========================================================================== */
.page-timeline {
    min-height: 100vh;
}

#timeline-page-section {
    padding-top: 8rem;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-tabs-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.timeline-tab {
    padding: 0.85rem 2.2rem;
    border-radius: 8px;
    border: 1px solid var(--border-glass);
    background: rgba(255,255,255,0.02);
    color: var(--text-secondary);
    font-family: var(--ff-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all var(--transition-fast);
}

.timeline-tab:hover {
    border-color: rgba(var(--accent-rgb), 0.3);
    color: var(--text-primary);
}

.timeline-tab.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #000;
    box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.3);
}

.page-timeline-container {
    margin-top: 2rem;
}

/* Timeline expandable event items */
.timeline-event-card {
    margin-bottom: 2rem;
    border-radius: 12px;
    overflow: hidden;
}

.timeline-event-header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.timeline-event-header:hover {
    background: rgba(255, 255, 255, 0.02);
}

.timeline-event-header-left {
    display: flex;
    flex-direction: column;
}

.timeline-event-date {
    font-family: var(--ff-heading);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.25rem;
}

.timeline-event-title {
    font-family: var(--ff-heading);
    font-size: 1.25rem;
    font-weight: 800;
}

.timeline-event-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.timeline-event-icon {
    font-size: 1.1rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.timeline-event-card.expanded .timeline-event-icon {
    transform: rotate(180deg);
    color: var(--accent-color);
}

.timeline-event-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0, 1, 0, 1);
    border-top: 1px solid transparent;
}

.timeline-event-card.expanded .timeline-event-body {
    max-height: 2000px;
    border-top: 1px solid var(--border-glass);
    transition: max-height 0.8s cubic-bezier(1, 0, 1, 0);
}

.timeline-event-body-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.timeline-event-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.timeline-event-photos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.timeline-event-photos img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-glass);
}

/* ==========================================================================
   CUSTOMIZATION PAGE LAYOUT & ADMIN PANELS
   ========================================================================== */
.page-customize {
    min-height: 100vh;
}

.customize-main {
    padding-top: 7.5rem;
    max-width: 1300px;
    margin: 0 auto;
    padding-bottom: 6rem;
}

.customize-wrapper {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    align-items: start;
}

.customize-sidebar {
    padding: 2rem;
}

.sidebar-title-block {
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding-bottom: 1.25rem;
}

.sidebar-title-block h3 {
    font-family: var(--ff-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
}

.sidebar-title-block p {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-tabs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.sidebar-tab {
    padding: 0.8rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    text-align: left;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    transition: all var(--transition-fast);
}

.sidebar-tab:hover {
    background: rgba(255,255,255,0.02);
    color: var(--text-primary);
}

.sidebar-tab.active {
    background: rgba(var(--accent-rgb), 0.15);
    border: 1px solid rgba(var(--accent-rgb), 0.25);
    color: var(--accent-color);
}

.sidebar-actions {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 1.5rem;
}

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

/* Edit Content area panels */
.customize-content {
    padding: 3rem;
    min-height: 500px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.panel-form-title {
    font-family: var(--ff-heading);
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.panel-form-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    padding-bottom: 1.25rem;
}

.panel-form {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.panel-form label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.panel-form input, .panel-form textarea, .panel-form select {
    background: rgba(5, 7, 10, 0.6);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    padding: 0.85rem 1.2rem;
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.panel-form input:focus, .panel-form textarea:focus, .panel-form select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.15);
    background: rgba(var(--accent-rgb), 0.02);
}

.field-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

/* Photo grid uploads */
.uploaded-photos-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.photo-thumb-container {
    height: 100px;
    border-radius: 8px;
    border: 1px solid var(--border-glass);
    position: relative;
    overflow: hidden;
}

.photo-thumb-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-delete-badge {
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ef4444;
    color: #fff;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    z-index: 10;
}

.file-upload-label {
    align-self: flex-start;
}

/* Bullet list builder */
.bullet-list-builder {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.builder-row {
    display: flex;
    gap: 0.75rem;
}

.builder-row input {
    flex-grow: 1;
}

.btn-remove-row {
    width: 42px;
    height: 42px;
    border-radius: 8px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-remove-row:hover {
    background: #ef4444;
    color: #fff;
}

/* Specializations Admin Switch */
.specs-selector-buttons {
    display: flex;
    gap: 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    padding-bottom: 1rem;
}

.spec-selector-btn {
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.spec-selector-btn:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.02);
}

.spec-selector-btn.active {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: rgba(var(--accent-rgb), 0.08);
}

/* Chips Grid (Skills admin) */
.skills-builder-section {
    padding: 2rem;
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
}

.skills-builder-section h4 {
    font-family: var(--ff-heading);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.tag-input-row {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.tag-input-row input {
    flex-grow: 1;
}

.chips-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.chip {
    padding: 0.35rem 0.8rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-glass);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.chip-delete {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: color var(--transition-fast);
}

.chip-delete:hover {
    color: #ef4444;
}

.bullets-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bullet-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1rem;
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    font-size: 0.85rem;
}

.bullet-item-delete {
    cursor: pointer;
    color: #ef4444;
}

/* Editor list item cards (Projects, Certs, Timeline) */
.editor-items-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.editor-item-card {
    padding: 2rem;
    border-radius: 12px;
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-glass);
}

.editor-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    padding-bottom: 0.75rem;
}

.editor-card-title {
    font-family: var(--ff-heading);
    font-weight: 700;
    font-size: 1.1rem;
}

.btn-delete-item {
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    border-radius: 4px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-delete-item:hover {
    background: #ef4444;
    color: #fff;
}

/* Backup styling */
.backup-actions {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.backup-card {
    padding: 2rem;
}

.backup-card h4 {
    font-family: var(--ff-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.backup-card h4 i {
    color: var(--accent-color);
}

.backup-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.danger-card {
    border-color: rgba(239, 68, 68, 0.2) !important;
}

.danger-card h4 i {
    color: #ef4444 !important;
}

/* Floating Save status toast */
.floating-save-notifier {
    position: fixed;
    bottom: -80px;
    left: 50%;
    transform: translateX(-50%);
    background: #10b981;
    color: #000;
    font-family: var(--ff-heading);
    font-weight: 700;
    padding: 0.85rem 2.2rem;
    border-radius: 50px;
    z-index: 200;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
    transition: bottom 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.floating-save-notifier.active {
    bottom: 2rem;
}

/* ==========================================================================
   CONTACT DETAILS & SOCIAL ICONS (INDEX & TIMELINE FLOATS)
   ========================================================================== */
.contact-container {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 4rem;
}

.contact-info-title {
    font-family: var(--ff-heading);
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.contact-info-desc {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.info-blocks {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.info-block {
    display: flex;
    align-items: center;
    padding: 1.25rem;
    border-radius: 12px;
}

.info-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-glass);
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-right: 1.25rem;
    flex-shrink: 0;
}

.info-details {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-weight: 600;
}

.info-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.copy-btn {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-glass);
    transition: all var(--transition-fast);
}

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

.social-networks h4 {
    font-family: var(--ff-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 45px;
    height: 45px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-size: 1.15rem;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    color: #000;
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(var(--accent-rgb), 0.35);
}

/* Contact Form */
.contact-form-container {
    padding: 3rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input, .form-group textarea {
    background: rgba(5, 7, 10, 0.5);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    padding: 0.85rem 1.2rem;
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.15);
    background: rgba(var(--accent-rgb), 0.02);
}

.btn-submit {
    align-self: flex-start;
    margin-top: 1rem;
}

.form-status {
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: none;
}

.form-status.success {
    display: block;
    color: #10b981;
}

.form-status.error {
    display: block;
    color: #ef4444;
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.footer {
    border-top: 1px solid var(--border-glass);
    background-color: #030406;
    padding: 3rem 2rem;
    text-align: center;
}

.footer-container {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer p:first-child {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.footer p:last-child {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ==========================================================================
   ANIMATIONS & KEYFRAMES
   ========================================================================== */
.animate-fade-in { animation: anim-fade-in 1s forwards; }
.animate-scale-up { animation: anim-scale-up 1s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }
.animate-slide-up { animation: anim-slide-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-slide-up-delayed { opacity: 0; animation: anim-slide-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards; }
.animate-slide-up-further { opacity: 0; animation: anim-slide-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards; }

@keyframes anim-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes anim-scale-up {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes anim-slide-up {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   HOBBIES SECTION
   ========================================================================== */
.hobbies-section {
    padding: 6rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
}

.hobbies-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.hobby-card {
    padding: 2.5rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all var(--transition-normal);
}

.hobby-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    transition: transform var(--transition-normal);
}

.hobby-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(var(--accent-rgb), 0.15);
    border-color: var(--accent-color);
}

.hobby-card:hover .hobby-icon {
    transform: scale(1.15) rotate(5deg);
}

.hobby-title {
    font-family: var(--ff-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

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

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .panel-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .specializations-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .skills-container-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .projects-grid, .certificates-grid, .hobbies-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .customize-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .uploaded-photos-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    html {
        font-size: 14px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-ctas {
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }
    
    .hero-ctas .btn {
        justify-content: center;
        width: 100%;
    }
    
    .specializations-grid, .projects-grid, .certificates-grid, .hobbies-grid {
        grid-template-columns: 1fr;
    }
    
    .pillar-card {
        height: 160px;
    }
    
    .pillar-display-container {
        padding: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form-container, .customize-content {
        padding: 1.5rem;
    }

    .uploaded-photos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}