/* ============================================================
   PROFESSIONAL PORTFOLIO - STYLES
   Dark Mode Only - Advanced Animations, Glassmorphism
   ============================================================ */

/* ============================================================
   CSS VARIABLES & BASE
   ============================================================ */
:root {
    --glass-bg: rgba(17, 34, 64, 0.7);
    --glass-border: rgba(100, 255, 218, 0.1);
    --glass-blur: 20px;
    --neon-cyan: #64ffda;
    --neon-blue: #00d4ff;
    --neon-purple: #a855f7;
    --neon-green: #22d3ee;
    --neon-pink: #f472b6;
    --bg-base: #0a192f;
    --bg-light: #112240;
    --bg-lighter: #1d3461;
    --text-primary: #ccd6f6;
    --text-secondary: #8892b0;
    --text-heading: #e6f1ff;
}

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

html {
    scroll-behavior: smooth;
}

/* Keep section tops visible below the fixed header when arriving via URL hash */
section[id] {
    scroll-margin-top: 90px;
}

body {
    background: var(--bg-base);
    min-height: 100vh;
    overflow-x: hidden;
    font-family: 'Inter', 'Cairo', sans-serif;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* RTL Support */
[dir="rtl"] body {
    font-family: 'Cairo', 'Inter', sans-serif;
}

[dir="rtl"] .font-mono {
    font-family: 'Cairo', 'JetBrains Mono', monospace;
}

/* Prevent horizontal overflow in ALL languages (RTL & LTR) -
   stops the sideways drag space that appears in English mode */
html {
    overflow-x: hidden;
}

/* ============================================================
   NOISE TEXTURE OVERLAY
   ============================================================ */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    mix-blend-mode: overlay;
}

/* ============================================================
   SCROLL PROGRESS BAR
   ============================================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
    z-index: 10000;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
}

/* ============================================================
   CUSTOM CURSOR
   ============================================================ */
.cursor-dot {
    width: 8px;
    height: 8px;
    background: var(--neon-cyan);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease;
    mix-blend-mode: difference;
}

.cursor-ring {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(100, 255, 218, 0.5);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    transition: all 0.15s ease;
}

.cursor-ring.hover {
    width: 60px;
    height: 60px;
    border-color: var(--neon-cyan);
    background: rgba(100, 255, 218, 0.1);
}

/* ============================================================
   STARFIELD & AURORA BACKGROUND (pure CSS, GPU-accelerated)
   Zero per-frame JavaScript — all animations run on the
   compositor thread via opacity/transform keyframes.
   ============================================================ */
.starfield {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

/* --- Star layers -------------------------------------------------- */
.star-layer {
    position: absolute;
    inset: 0;
}

.star {
    position: absolute;
    border-radius: 50%;
    background: #d9f2ff;
    animation: twinkle var(--dur, 3s) ease-in-out infinite;
    animation-delay: var(--delay, 0s);
}

.star-layer[data-layer="md"] .star {
    background: #eaf9ff;
}

.star-layer[data-layer="lg"] .star {
    background: #ffffff;
    box-shadow: 0 0 6px 1px rgba(100, 255, 218, 0.75);
}

@keyframes twinkle {
    0%, 100% {
        opacity: var(--min, 0.15);
        transform: scale(1);
    }
    50% {
        opacity: var(--max, 0.8);
        transform: scale(1.4);
    }
}

/* --- Aurora glow blobs ---------------------------------------------- */
.aurora-wrap {
    position: absolute;
    inset: 0;
    transition: transform 1.6s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.aurora {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.26;
    mix-blend-mode: screen;
    will-change: transform;
}

.aurora-1 {
    width: 55vmax;
    height: 55vmax;
    top: -18%;
    left: -12%;
    background: radial-gradient(circle, rgba(100, 255, 218, 0.55) 0%, transparent 65%);
    animation: drift-a 26s ease-in-out infinite alternate;
}

.aurora-2 {
    width: 48vmax;
    height: 48vmax;
    bottom: -22%;
    right: -14%;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.5) 0%, transparent 65%);
    animation: drift-b 32s ease-in-out infinite alternate;
}

.aurora-3 {
    width: 40vmax;
    height: 40vmax;
    top: 30%;
    right: -8%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.45) 0%, transparent 65%);
    animation: drift-c 22s ease-in-out infinite alternate;
}

@keyframes drift-a {
    from {
        transform: translate3d(0, 0, 0) scale(1);
    }
    to {
        transform: translate3d(8vmax, 10vmax, 0) scale(1.15);
    }
}

@keyframes drift-b {
    from {
        transform: translate3d(0, 0, 0) scale(1.1);
    }
    to {
        transform: translate3d(-9vmax, -7vmax, 0) scale(1);
    }
}

@keyframes drift-c {
    from {
        transform: translate3d(0, 0, 0) scale(1);
    }
    to {
        transform: translate3d(-6vmax, 8vmax, 0) scale(1.2);
    }
}

/* --- Shooting star --------------------------------------------------- */
.shooting-star {
    position: absolute;
    top: 14%;
    right: 18%;
    width: 150px;
    height: 1.5px;
    background: linear-gradient(
        270deg,
        rgba(255, 255, 255, 0.95),
        rgba(100, 255, 218, 0.4) 60%,
        transparent
    );
    border-radius: 2px;
    opacity: 0;
    animation: shoot 11s linear infinite;
}

@keyframes shoot {
    0%, 6% {
        opacity: 0;
        transform: translate3d(0, 0, 0) rotate(-32deg);
    }
    7% {
        opacity: 1;
    }
    11% {
        opacity: 0;
        transform: translate3d(-38vmax, 21vmax, 0) rotate(-32deg);
    }
    100% {
        opacity: 0;
        transform: translate3d(-38vmax, 21vmax, 0) rotate(-32deg);
    }
}

/* --- Reduced motion: static stars, no drift --------------------------- */
@media (prefers-reduced-motion: reduce) {
    .star {
        animation: none !important;
        opacity: 0.45 !important;
    }
    .aurora,
    .shooting-star {
        animation: none !important;
        opacity: 0.1 !important;
    }
    .aurora-wrap {
        transition: none !important;
    }
}

/* ============================================================
   GLASS CARD EFFECTS
   ============================================================ */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

.glass-strong {
    background: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(100, 255, 218, 0.15);
}

/* ============================================================
   NEON GLOW EFFECTS
   ============================================================ */
.neon-glow {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.neon-glow:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow:
        0 0 15px rgba(100, 255, 218, 0.4),
        0 0 30px rgba(100, 255, 218, 0.2),
        0 0 45px rgba(100, 255, 218, 0.1);
    border-color: var(--neon-cyan);
}

.neon-glow-purple {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.neon-glow-purple:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow:
        0 0 15px rgba(168, 85, 247, 0.4),
        0 0 30px rgba(168, 85, 247, 0.2),
        0 0 45px rgba(168, 85, 247, 0.1);
    border-color: var(--neon-purple);
}

/* ============================================================
   GRADIENT TEXT
   ============================================================ */
.gradient-text {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
}

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

/* ============================================================
   SECTION DIVIDER
   ============================================================ */
.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-purple), transparent);
    position: relative;
}

.section-divider::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--neon-cyan);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(100, 255, 218, 0.5);
}

/* ============================================================
   TYPING CURSOR
   ============================================================ */
.typing-cursor {
    display: inline-block;
    width: 3px;
    height: 1.2em;
    background: var(--neon-cyan);
    margin-inline-start: 4px;
    animation: blink 0.8s infinite;
    vertical-align: middle;
    box-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ============================================================
   BUTTON STYLES
   ============================================================ */
.btn-primary {
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(100, 255, 218, 0.1);
    transform: translateX(-100%);
    transition: transform 0.4s ease;
}

.btn-primary:hover::before {
    transform: translateX(0);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(100, 255, 218, 0.2);
}

.btn-outline {
    border: 1px solid rgba(100, 255, 218, 0.3);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.btn-outline:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    transform: translateY(-3px);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--neon-cyan);
    transition: width 0.3s ease;
}

[dir="rtl"] .nav-link::after {
    left: auto;
    right: 0;
}

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

/* ============================================================
   SKILL PROGRESS BARS
   ============================================================ */
.skill-bar {
    width: 0;
    transition: width 1.5s ease-out;
}

.skill-bar.animated {
    width: var(--skill-level);
}

/* ============================================================
   PROJECT CARD EFFECTS
   ============================================================ */
.project-overlay {
    opacity: 0;
    transition: opacity 0.4s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-card {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   SOCIAL ICON HOVER
   ============================================================ */
.social-icon {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-icon:hover {
    transform: translateY(-5px) rotate(5deg);
    color: var(--neon-cyan);
}

/* ============================================================
   FORM INPUT FOCUS
   ============================================================ */
.form-input {
    transition: all 0.3s ease;
}

.form-input:focus {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.2);
}

/* ============================================================
   CUSTOM SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--neon-blue), var(--neon-pink));
}

/* ============================================================
   MOBILE MENU
   ============================================================ */
#mobile-menu {
    transform: translateX(100%);
    visibility: hidden;
    transition:
        transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        visibility 0s linear 0.4s;
}

#mobile-menu.open {
    transform: translateX(0);
    visibility: visible;
    transition:
        transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        visibility 0s;
}

[dir="rtl"] #mobile-menu {
    right: auto;
    left: 0;
    transform: translateX(-100%);
}

[dir="rtl"] #mobile-menu.open {
    transform: translateX(0);
}

/* ============================================================
   LANGUAGE TOGGLE
   ============================================================ */
.lang-toggle {
    transition: all 0.3s ease;
}

.lang-toggle:hover {
    transform: rotate(15deg) scale(1.1);
}

/* ============================================================
   MAGNETIC BUTTON EFFECT
   ============================================================ */
.magnetic-btn {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   TEXT REVEAL ANIMATION
   ============================================================ */
.text-reveal {
    overflow: hidden;
}

.text-reveal span {
    display: inline-block;
    transform: translateY(100%);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.text-reveal.revealed span {
    transform: translateY(0);
    opacity: 1;
}

/* ============================================================
   GLITCH EFFECT ON HOVER
   ============================================================ */
.glitch-hover:hover {
    animation: glitch 0.3s ease;
}

@keyframes glitch {
    0% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
    100% { transform: translate(0); }
}

/* ============================================================
   GRADIENT ORBS
   ============================================================ */
.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    pointer-events: none;
}

/* ============================================================
   SMOOTH LANGUAGE TRANSITION
   ============================================================ */
.lang-transition * {
    transition: opacity 0.3s ease;
}

/* ============================================================
   RTL ARROW SUPPORT
   ============================================================ */
[dir="rtl"] .fa-arrow-right {
    transform: rotate(180deg);
}

[dir="rtl"] .fa-arrow-left {
    transform: rotate(180deg);
}

/* ============================================================
   TILT CARD EFFECT
   ============================================================ */
.tilt-card {
    transform-style: preserve-3d;
    perspective: 1000px;
    will-change: transform;
}

/* ============================================================
   PARALLAX ELEMENTS
   ============================================================ */
.parallax-element {
    transition: transform 0.1s ease-out;
    will-change: transform;
}

/* ============================================================
   FLOATING ANIMATIONS
   ============================================================ */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes floatSlow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-slow {
    animation: floatSlow 8s ease-in-out infinite;
}

/* ============================================================
   PULSE ANIMATIONS
   ============================================================ */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

.animate-pulse-slow {
    animation: pulse 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================================
   RESPONSIVE - TABLET
   ============================================================ */
@media (max-width: 1024px) {
    .cursor-dot,
    .cursor-ring {
        display: none !important;
    }
}

/* ============================================================
   RESPONSIVE - MOBILE
   ============================================================ */
@media (max-width: 768px) {
    .gradient-orb {
        filter: blur(40px);
        opacity: 0.1;
    }
    
    .section-divider::before {
        width: 8px;
        height: 8px;
    }
}

/* ============================================================
   FORM STATUS MESSAGE
   ============================================================ */
@keyframes fadeInMessage {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================
   PROFILE IMAGE MODAL
   ============================================================ */
#profile-modal {
    opacity: 0;
    transition: opacity 0.3s ease;
}

#profile-modal.active {
    opacity: 1;
}

#profile-modal .hexagon-outer {
    animation: modalHexEnter 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes modalHexEnter {
    0% {
        transform: scale(0.3) rotate(-30deg);
        opacity: 0;
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

#profile-modal .hexagon-glow {
    animation: modalGlowPulse 2s ease-in-out infinite alternate;
}

@keyframes modalGlowPulse {
    0% {
        opacity: 0.4;
        filter: blur(20px);
    }
    100% {
        opacity: 0.8;
        filter: blur(30px);
    }
}

/* RTL Support for Modal Close Button */
[dir="rtl"] #modal-close {
    right: auto;
    left: 0;
}

/* ============================================================
   HEXAGONAL PROFILE IMAGE
   ============================================================ */
.hexagon-outer {
    position: relative;
    width: 100%;
    height: 100%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    padding: 5px;
    animation: hexagonFloat 6s ease-in-out infinite;
    z-index: 2;
}

.hexagon-inner {
    width: 100%;
    height: 100%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: var(--bg-base);
    padding: 4px;
    overflow: hidden;
}

.hexagon-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.hexagon-glow {
    position: absolute;
    inset: -15px;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    filter: blur(25px);
    opacity: 0.5;
    z-index: 1;
    animation: glowPulse 3s ease-in-out infinite alternate;
}

@keyframes hexagonFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(2deg);
    }
}

@keyframes glowPulse {
    0% {
        opacity: 0.3;
        filter: blur(20px);
    }
    100% {
        opacity: 0.6;
        filter: blur(25px);
    }
}

/* ============================================================
   ACCESSIBILITY - REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0s !important;
    }
    
    .gradient-orb {
        animation: none;
    }
    
    .cursor-dot,
    .cursor-ring {
        display: none !important;
    }
}