/* ============================================================
   GLOBAL VARIABLES
   ============================================================ */
:root {
    --neon-blue: #00f3ff;
    --neon-purple: #bc13fe;
    --glass-bg: rgba(20, 20, 20, 0.7);
    --dark-bg: #121212;
    --card-bg: #1e1e1e;
}

/* ============================================================
   BASE
   ============================================================ */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

html {
    scroll-behavior: smooth;
}

#accueil {
    padding-top: 80px;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar-glass {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

/* ============================================================
   ANIMATED GRADIENT TEXT
   ============================================================ */
.text-gradient {
    background: linear-gradient(45deg, var(--neon-blue), var(--neon-purple), #ff0055);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientMove 5s ease infinite;
}

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

/* ============================================================
   NEON BUTTONS
   ============================================================ */
.btn-neon {
    background-color: transparent;
    border: 2px solid var(--neon-blue);
    color: var(--neon-blue);
    transition: all 0.3s ease;
}

.btn-neon:hover {
    color: white;
    background-color: var(--neon-blue);
    box-shadow: 0 0 10px var(--neon-blue), 0 0 40px var(--neon-blue);
    border-color: var(--neon-blue);
    transform: scale(1.05);
}

/* ============================================================
   LEVITATING CARDS
   ============================================================ */
.hover-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    border-radius: 15px;
    overflow: hidden;
}

.hover-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2) !important;
}

/* ============================================================
   HERO IMAGE BORDER
   ============================================================ */
#accueil img {
    border: 3px solid transparent;
    background: linear-gradient(white, white) padding-box,
                linear-gradient(45deg, var(--neon-blue), var(--neon-purple)) border-box;
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   PARTICLES CANVAS
   ============================================================ */
#particles-canvas {
    pointer-events: none;
    opacity: 0.45;
}

/* ============================================================
   TYPING ANIMATION
   ============================================================ */
#typing-prefix {
    color: var(--neon-blue);
}

#typing-cursor {
    color: var(--neon-blue);
    font-weight: 100;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

/* ============================================================
   PROJECT IMAGE
   ============================================================ */
.project-img-custom {
    height: 250px;
    width: 100%;
    object-fit: cover;
    border: 3px solid var(--neon-blue);
    border-radius: 10px;
    margin: 10px;
}

/* ============================================================
   TECH TAGS (on cards and modals)
   ============================================================ */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    background: rgba(0, 243, 255, 0.1);
    color: var(--neon-blue);
    border: 1px solid rgba(0, 243, 255, 0.3);
}

.tech-tag-ai {
    background: rgba(188, 19, 254, 0.15);
    color: var(--neon-purple);
    border-color: rgba(188, 19, 254, 0.4);
}

/* ============================================================
   COMING SOON BADGE
   ============================================================ */
.coming-soon-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    background: rgba(255, 165, 0, 0.12);
    color: #ffa500;
    border: 1px solid rgba(255, 165, 0, 0.3);
}

/* ============================================================
   FEATURED CARD (CalTrack)
   ============================================================ */
.featured-card {
    border: 1px solid rgba(0, 243, 255, 0.35) !important;
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.08) !important;
    position: relative;
}

.featured-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 10;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: white;
}

/* ============================================================
   CALTRACK BANNER
   ============================================================ */
.caltrack-banner {
    background: linear-gradient(135deg, #080818 0%, #18082e 50%, #081818 100%);
    position: relative;
    overflow: hidden;
}

.caltrack-banner::before {
    content: '';
    position: absolute;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(0, 243, 255, 0.12) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: caltrack-glow 3s ease-in-out infinite;
}

.caltrack-icon {
    font-size: 3rem;
    filter: drop-shadow(0 0 12px rgba(0, 243, 255, 0.5));
}

@keyframes caltrack-glow {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    50%       { transform: translate(-50%, -50%) scale(1.4); opacity: 1; }
}

/* ============================================================
   PORTFOLIO ANIMATED BANNER
   ============================================================ */
.portfolio-banner {
    background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #0f1a0f 100%);
    position: relative;
    overflow: hidden;
}

.portfolio-banner-text {
    color: var(--neon-blue);
    font-size: 1.05rem;
    font-weight: 600;
    text-shadow: 0 0 10px var(--neon-blue);
    animation: text-pulse 2.5s ease-in-out infinite;
    position: relative;
    z-index: 1;
    padding: 0 20px;
    margin-top: 10px;
    margin-bottom: 0;
}

.pulse-ring {
    width: 70px;
    height: 70px;
    border: 2px solid var(--neon-blue);
    border-radius: 50%;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    animation: ring-expand 2s ease-out infinite;
}

.pulse-ring::before,
.pulse-ring::after {
    content: '';
    position: absolute;
    inset: -12px;
    border: 1px solid rgba(0, 243, 255, 0.35);
    border-radius: 50%;
    animation: ring-expand 2s ease-out infinite;
}

.pulse-ring::after {
    inset: -24px;
    border-color: rgba(0, 243, 255, 0.15);
    animation-delay: 0.5s;
}

@keyframes ring-expand {
    0%   { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.6); opacity: 0; }
}

@keyframes text-pulse {
    0%, 100% { opacity: 1; text-shadow: 0 0 10px var(--neon-blue); }
    50%       { opacity: 0.65; text-shadow: 0 0 25px var(--neon-blue), 0 0 50px var(--neon-blue); }
}

/* ============================================================
   SKILL BADGE SYSTEM
   ============================================================ */
.skill-group {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.07);
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 25px;
    font-size: 0.82rem;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skill-badge:hover {
    transform: translateY(-2px);
}

.skill-badge-frontend {
    background: rgba(0, 243, 255, 0.1);
    color: var(--neon-blue);
    border: 1px solid rgba(0, 243, 255, 0.25);
}

.skill-badge-frontend:hover {
    box-shadow: 0 4px 12px rgba(0, 243, 255, 0.2);
}

.skill-badge-lang {
    background: rgba(188, 19, 254, 0.1);
    color: #d46eff;
    border: 1px solid rgba(188, 19, 254, 0.25);
}

.skill-badge-lang:hover {
    box-shadow: 0 4px 12px rgba(188, 19, 254, 0.2);
}

.skill-badge-tools {
    background: rgba(0, 255, 136, 0.08);
    color: #00c96e;
    border: 1px solid rgba(0, 255, 136, 0.22);
}

.skill-badge-tools:hover {
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.2);
}

/* ============================================================
   EDUCATION TIMELINE
   ============================================================ */
.timeline {
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--neon-blue), var(--neon-purple));
}

.timeline-item {
    position: relative;
    margin-bottom: 28px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -28px;
    top: 5px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--neon-blue);
    border: 2px solid var(--dark-bg);
    box-shadow: 0 0 8px var(--neon-blue);
}

.timeline-year {
    font-size: 0.78rem;
    color: var(--neon-blue);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 4px;
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 16px 20px;
}

.timeline-content h5 {
    margin-bottom: 4px;
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
#back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--neon-blue);
    color: #000;
    font-size: 1.1rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(16px);
    transition: all 0.3s ease;
    z-index: 9999;
    box-shadow: 0 0 18px rgba(0, 243, 255, 0.45);
}

#back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

#back-to-top:hover {
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.7);
    transform: translateY(-3px);
}

/* ============================================================
   INLINE FORM FEEDBACK
   ============================================================ */
#form-feedback {
    padding: 12px 16px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.9rem;
}

#form-feedback.success {
    background: rgba(0, 255, 136, 0.1);
    color: #00c96e;
    border: 1px solid rgba(0, 255, 136, 0.3);
}

#form-feedback.error {
    background: rgba(255, 80, 80, 0.1);
    color: #ff5050;
    border: 1px solid rgba(255, 80, 80, 0.3);
}

/* ============================================================
   DARK MODE
   ============================================================ */
body.dark-mode {
    background-color: var(--dark-bg);
    color: #f1f1f1;
}

body.dark-mode .bg-light {
    background-color: #1a1a1a !important;
    color: #f1f1f1 !important;
}

body.dark-mode .bg-white,
body.dark-mode .card {
    background-color: var(--card-bg) !important;
    color: #f1f1f1 !important;
}

body.dark-mode .text-muted {
    color: #b0b0b0 !important;
}

body.dark-mode .form-control {
    background-color: #333 !important;
    color: #fff !important;
    border-color: #555;
}

body.dark-mode .form-control::placeholder {
    color: #aaa !important;
}

body.dark-mode .modal-content {
    background-color: var(--card-bg);
    color: #fff;
    border: 1px solid #444;
}

body.dark-mode .modal-header {
    border-bottom-color: #444;
}

body.dark-mode .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

body.dark-mode .navbar-glass {
    background: rgba(0, 0, 0, 0.9) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

body.dark-mode .btn-outline-dark {
    color: white;
    border-color: white;
}

body.dark-mode .btn-outline-dark:hover {
    background-color: white;
    color: black;
}

body.dark-mode #accueil img {
    background: linear-gradient(var(--dark-bg), var(--dark-bg)) padding-box,
                linear-gradient(45deg, var(--neon-blue), var(--neon-purple)) border-box;
}

body.dark-mode .skill-group {
    background: #1a1a1a;
}

body.dark-mode .timeline-content {
    background: #1a1a1a;
}

body.dark-mode .list-inline {
    background-color: #1a1a1a !important;
}

/* ============================================================
   LIGHT MODE — COMPLETE SCHEME
   Accent: #2563eb (indigo-blue)
   ============================================================ */

/* Base */
body:not(.dark-mode) {
    background-color: #f8fafc;
    color: #1e293b;
}

/* Navbar */
body:not(.dark-mode) .navbar-glass {
    background: rgba(255, 255, 255, 0.92) !important;
    border-bottom: 1px solid #e2e8f0;
}
body:not(.dark-mode) .navbar-glass .navbar-brand,
body:not(.dark-mode) .navbar-glass .nav-link {
    color: #1e293b !important;
}
body:not(.dark-mode) .navbar-glass .nav-link:hover {
    color: #2563eb !important;
}

/* Hero */
body:not(.dark-mode) #accueil {
    background: linear-gradient(135deg, #f0f4ff 0%, #faf5ff 50%, #f0fdf4 100%);
}
body:not(.dark-mode) #typing-prefix,
body:not(.dark-mode) #typing-cursor {
    color: #2563eb;
}
body:not(.dark-mode) #accueil img {
    background: linear-gradient(#f8fafc, #f8fafc) padding-box,
                linear-gradient(45deg, #2563eb, #7c3aed) border-box;
}

/* Cards — visible borders and shadows */
body:not(.dark-mode) .card {
    background-color: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07) !important;
    color: #1e293b !important;
}
body:not(.dark-mode) .hover-card:hover {
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.14) !important;
}

/* Mini projects section */
body:not(.dark-mode) .bg-light {
    background-color: #eef2f7 !important;
}

/* Contact section */
body:not(.dark-mode) .bg-white {
    background-color: #ffffff !important;
    color: #1e293b !important;
}

/* Text */
body:not(.dark-mode) .text-muted {
    color: #64748b !important;
}

/* Buttons */
body:not(.dark-mode) .btn-neon {
    border-color: #2563eb;
    color: #2563eb;
}
body:not(.dark-mode) .btn-neon:hover {
    background-color: #2563eb;
    border-color: #2563eb;
    color: #ffffff;
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.4), 0 0 30px rgba(37, 99, 235, 0.2);
}
body:not(.dark-mode) .btn-outline-dark {
    color: #1e293b;
    border-color: #cbd5e1;
}
body:not(.dark-mode) .btn-outline-dark:hover {
    background-color: #1e293b;
    color: #ffffff;
}

/* Featured card */
body:not(.dark-mode) .featured-card {
    border: 2px solid #2563eb !important;
    box-shadow: 0 4px 24px rgba(37, 99, 235, 0.12) !important;
}

/* Project images */
body:not(.dark-mode) .project-img-custom {
    border-color: #2563eb;
}

/* Tech tags */
body:not(.dark-mode) .tech-tag {
    background: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
}
body:not(.dark-mode) .tech-tag-ai {
    background: #faf5ff;
    color: #7c3aed;
    border-color: #ddd6fe;
}

/* Coming soon badge */
body:not(.dark-mode) .coming-soon-badge {
    background: #fffbeb;
    color: #d97706;
    border-color: #fde68a;
}

/* CalTrack banner — keep dark, it looks intentional */
/* Portfolio banner */
body:not(.dark-mode) .portfolio-banner {
    background: linear-gradient(135deg, #e0e7ff 0%, #ede9fe 50%, #dcfce7 100%);
}
body:not(.dark-mode) .portfolio-banner-text {
    color: #2563eb;
    text-shadow: none;
    animation: none;
    opacity: 1;
}
body:not(.dark-mode) .pulse-ring {
    border-color: #2563eb;
    animation: ring-expand-light 2s ease-out infinite;
}
body:not(.dark-mode) .pulse-ring::before {
    border-color: rgba(37, 99, 235, 0.35);
}
body:not(.dark-mode) .pulse-ring::after {
    border-color: rgba(37, 99, 235, 0.15);
}
@keyframes ring-expand-light {
    0%   { transform: scale(1); opacity: 0.9; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Skill groups */
body:not(.dark-mode) .skill-group {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
body:not(.dark-mode) .skill-badge-frontend {
    background: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
}
body:not(.dark-mode) .skill-badge-frontend:hover {
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}
body:not(.dark-mode) .skill-badge-lang {
    background: #faf5ff;
    color: #7c3aed;
    border: 1px solid #ddd6fe;
}
body:not(.dark-mode) .skill-badge-lang:hover {
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
}
body:not(.dark-mode) .skill-badge-tools {
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #bbf7d0;
}
body:not(.dark-mode) .skill-badge-tools:hover {
    box-shadow: 0 4px 12px rgba(21, 128, 61, 0.15);
}

/* About info list */
body:not(.dark-mode) .list-inline {
    background-color: #ffffff !important;
    border: 1px solid #e2e8f0;
}

/* Timeline */
body:not(.dark-mode) .timeline::before {
    background: linear-gradient(to bottom, #2563eb, #7c3aed);
}
body:not(.dark-mode) .timeline-dot {
    background: #2563eb;
    border-color: #f8fafc;
    box-shadow: 0 0 6px rgba(37, 99, 235, 0.5);
}
body:not(.dark-mode) .timeline-year {
    color: #2563eb;
}
body:not(.dark-mode) .timeline-content {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Form */
body:not(.dark-mode) .form-control {
    background-color: #f1f5f9 !important;
    color: #1e293b !important;
    border: 1px solid #e2e8f0 !important;
}
body:not(.dark-mode) .form-control:focus {
    border-color: #2563eb !important;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15) !important;
}
body:not(.dark-mode) .form-control::placeholder {
    color: #94a3b8 !important;
}

/* Modals */
body:not(.dark-mode) .modal-content {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* Back to top */
body:not(.dark-mode) #back-to-top {
    background: #2563eb;
    color: #ffffff;
    box-shadow: 0 0 14px rgba(37, 99, 235, 0.4);
}
body:not(.dark-mode) #back-to-top:hover {
    box-shadow: 0 0 24px rgba(37, 99, 235, 0.6);
}