/* General Body and HTML Setup */
body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--app-bg-fallback);
    color: var(--text);
}

html {
    scroll-behavior: smooth;
}

/* Design tokens */
:root {
    /* LIGHT THEME (default) */
    --app-bg-fallback: #f7fafc;
    --bg-start: #f7fafc;
    --bg-mid: #eef2ff; /* indigo-50 */
    --bg-end: #ffffff;
    --primary: #7c3aed; /* violet-600 */
    --primary-600: #6d28d9;
    --text: #0f172a; /* slate-900 */
    --muted: #475569; /* slate-600 */
    --card: rgba(255,255,255,0.7);
    --card-border: rgba(2,6,23,0.08);
    --glass: rgba(255,255,255,0.75);
    --shadow-strong: 0 20px 40px rgba(2,6,23,0.08);
}

.dark {
    /* DARK THEME */
    --app-bg-fallback: #0b1021;
    --bg-start: #0b1021;
    --bg-mid: #101936;
    --bg-end: #0b1021;
    --primary: #f59e0b; /* amber-500 */
    --primary-600: #d97706;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --card: rgba(255,255,255,0.06);
    --card-border: rgba(255,255,255,0.12);
    --glass: rgba(255,255,255,0.08);
    --shadow-strong: 0 20px 40px rgba(0,0,0,0.35);
}

/* Background gradient canvas */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: radial-gradient(1200px 800px at 10% -10%, rgba(124, 58, 237, 0.14), transparent 60%),
                radial-gradient(1000px 700px at 110% 10%, rgba(59, 130, 246, 0.12), transparent 60%),
                radial-gradient(800px 600px at 50% 120%, rgba(236, 72, 153, 0.10), transparent 60%),
                linear-gradient(180deg, var(--bg-start), var(--bg-mid) 40%, var(--bg-end));
    z-index: -2;
}

/* Subtle grain */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="160" height="160" viewBox="0 0 160 160"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="2" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.04"/></svg>');
    pointer-events: none;
    z-index: -1;
}

/* Custom scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #cbd5e1;
}

::-webkit-scrollbar-thumb {
    background-color: #4b5563;
    border-radius: 4px;
}

/* Responsive Section Padding (Mobile First) */
section {
    padding: 2rem 1rem; /* Reduced vertical padding for mobile */
}

@media (min-width: 640px) { /* Apply larger padding on tablets and desktop */
    section {
        padding: 4rem 1rem;
    }
}

/* Carousel Styling */
.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    max-width: 960px;
    margin: 0 auto;
    /* Tailwind equivalent: shadow-xl */
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Mobile Aspect Ratio (4:3) */
    aspect-ratio: 4 / 3; 
}

@media (min-width: 768px) {
    /* Desktop Aspect Ratio (16:9) */
    .carousel-container {
        aspect-ratio: 16 / 9;
    }
}

.carousel-image {
    width: 100%;
    height: 100%;
    /* Ensures the image covers the container while preserving aspect ratio */
    object-fit: cover; 
    display: block;
    transition: opacity 0.5s ease-in-out; 
    opacity: 1; 
    position: absolute; 
    top: 0;
    left: 0;
}

/* Glass card */
.glass {
    background: var(--glass);
    backdrop-filter: saturate(140%) blur(12px);
    -webkit-backdrop-filter: saturate(140%) blur(12px);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-strong);
    color: var(--text);
}

/* Fancy underline for headings */
.headline {
    position: relative;
}
.headline::after {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -0.75rem;
    width: 96px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(245,158,11,0.0), rgba(245,158,11,1), rgba(245,158,11,0.0));
}

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(24px) scale(0.98); transition: opacity .7s ease, transform .7s ease; }
.reveal-visible { opacity: 1; transform: translateY(0) scale(1); }

/* Ensure readable copy text in both themes */
.prose, .prose p, .prose li, .prose span { color: var(--text); }

/* Magnetic button hover lift */
.btn-cta {
    transform: translateZ(0);
    transition: transform .25s ease, box-shadow .25s ease;
    box-shadow: 0 10px 24px rgba(245, 158, 11, 0.25);
}
.btn-cta:hover { transform: translateY(-2px) scale(1.02); }
.btn-cta:active { transform: translateY(0) scale(0.99); }

/* Gradient text utility */
.text-gradient {
    background: linear-gradient(90deg, #f59e0b, #f43f5e, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Floating blob decorations */
.blob {
    position: absolute;
    border-radius: 9999px;
    filter: blur(30px);
    opacity: 0.35;
    animation: float 14s ease-in-out infinite;
}
.blob--amber { background: radial-gradient(circle at 30% 30%, rgba(124,58,237,.55), rgba(124,58,237,.05)); }
.blob--pink { background: radial-gradient(circle at 30% 30%, rgba(236,72,153,.45), rgba(236,72,153,.05)); animation-duration: 18s; }
.blob--blue { background: radial-gradient(circle at 30% 30%, rgba(59,130,246,.45), rgba(59,130,246,.05)); animation-duration: 20s; }

@keyframes float {
    0% { transform: translate3d(0,0,0) scale(1); }
    50% { transform: translate3d(20px, -30px, 0) scale(1.06); }
    100% { transform: translate3d(0,0,0) scale(1); }
}

/* Project card hover tilt */
.tilt {
    transition: transform .2s ease, box-shadow .2s ease;
    transform-style: preserve-3d;
}
.tilt:hover {
    transform: perspective(900px) rotateX(2deg) rotateY(-2deg) translateY(-2px);
    box-shadow: 0 24px 48px rgba(0,0,0,0.25);
}

/* Timeline style for experience */
.timeline {
    position: relative;
}
.timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, rgba(245,158,11,0), rgba(245,158,11,0.8), rgba(245,158,11,0));
}
.timeline-item { position: relative; padding-left: 2rem; }
.timeline-item::before {
    content: "";
    position: absolute;
    left: 2px; top: 0.75rem;
    width: 12px; height: 12px; border-radius: 999px;
    background: var(--primary);
    box-shadow: 0 0 0 4px rgba(245,158,11,0.15);
}

/* Contact form floating labels (minimal) */
.field { position: relative; }
.field input, .field textarea { background: rgba(255,255,255,0.04); color: var(--text); border: 1px solid var(--card-border); }
.field label {
    position: absolute; left: 16px; top: 14px; color: var(--muted);
    transition: all .2s ease; pointer-events: none; background: transparent;
}
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label {
    top: -8px; font-size: 12px; color: var(--primary); padding: 0 6px; background: rgba(11,16,33,0.85);
}