/* ============================================================
   Portfolio — Custom Styles
   ============================================================ */

/* Base */
body {
    font-family: 'Inter', sans-serif;
    background: #09090b;
    color: #fafafa;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.font-display { font-family: 'Plus Jakarta Sans', sans-serif; }

html { scroll-behavior: smooth; }
::selection { background: rgba(99, 102, 241, 0.2); color: #fafafa; }

/* Scroll Progress Bar */
#scrollProgress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: #6366f1;
    z-index: 200;
    transition: width 0.1s ease-out;
}

/* Navigation */
.nav-glass {
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-scrolled {
    background: rgba(9, 9, 11, 0.85) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-link {
    position: relative;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link-active {
    color: #fafafa;
}

.nav-link-active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 1px;
    background: #6366f1;
}

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    inset: 0;
    background: rgba(9, 9, 11, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu a {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu.active a {
    opacity: 1;
    transform: translateY(0);
}

/* Glassmorphism */
.glass {
    background: rgba(24, 24, 27, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.glass-pill {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.3s ease;
}

.glass-pill:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
}

/* Hero */
.hero-glow {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}

/* Dot Grid Background */
.dot-grid {
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 32px 32px;
}

/* Parallax Section */
.parallax-bg {
    will-change: transform;
    transition: transform 0.1s linear;
}

/* Progress Bar (Impact Section) */
.progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #6366f1;
    border-radius: 2px;
    width: 0%;
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Project Cards */
.project-card {
    background: rgba(24, 24, 27, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover {
    background: rgba(24, 24, 27, 0.8);
    border-color: rgba(99, 102, 241, 0.2);
    transform: translateY(-6px);
}

/* Timeline */
.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(99, 102, 241, 0.2);
    transform: translateX(-50%);
}

.timeline-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #09090b;
    border: 2px solid #6366f1;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-dot-current {
    border-color: #10b981;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

.timeline-card {
    background: rgba(24, 24, 27, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.timeline-card:hover {
    border-color: rgba(99, 102, 241, 0.15);
}

/* Mobile timeline */
@media (max-width: 767px) {
    .timeline-line {
        left: 20px;
    }
    .timeline-dot {
        left: 20px;
    }
}

/* Skill Tags */
.skill-tag {
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 500;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: #a1a1aa;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.2);
    color: #c7d2fe;
}

/* Expertise Card */
.expertise-card {
    background: rgba(24, 24, 27, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.04);
    transition: all 0.3s ease;
}

.expertise-card:hover {
    border-color: rgba(99, 102, 241, 0.15);
    background: rgba(24, 24, 27, 0.5);
}

/* Section Divider */
.section-divider {
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.05), transparent);
}

/* Magnetic Button */
.magnetic-btn {
    display: inline-block;
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Hero Letter Animation */
.hero-name span {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px);
    animation: letterReveal 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes letterReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.revealed,
.reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Stagger Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }
.stagger-7 { transition-delay: 0.7s; }

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .parallax-bg {
        transform: none !important;
    }
    .reveal, .reveal-left, .reveal-right {
        opacity: 1;
        transform: none;
    }
}