/* =============================================
   COMPONENT STYLES
   Reusable UI components
   ============================================= */

/* --- Cards --- */
.card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
}

.project-tile,
.project-tile-featured {
    display: block;
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

.card h3 {
    margin-top: 0;
    color: var(--primary-text-color);
    font-family: var(--font-main);
    font-weight: 600;
    font-size: 1.25rem;
}

.card p {
    color: var(--secondary-text-color);
    margin: var(--spacing-sm) 0 0 0;
}

.card-footer {
    margin-top: var(--spacing-lg);
}

.card-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

/* --- Project Tiles --- */
.project-tile {
    cursor: pointer;
}

.project-tile:hover,
.project-tile-featured:hover {
    transform: translateY(-5px);
    background-color: var(--card-hover-bg);
    border-color: var(--accent-color);
}

.project-tile-featured {
    text-align: left;
    transition: all var(--transition-normal);
    cursor: pointer;
}

/* --- Tech Tags --- */
.tech-tags {
    margin-top: var(--spacing-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tags span {
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--accent-color);
    padding: var(--spacing-xs) 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-mono);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

/* --- Buttons --- */
.download-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    transition: all var(--transition-normal);
    margin-bottom: var(--spacing-xl);
    border: none;
    cursor: pointer;
}

.download-button:hover {
    transform: translateY(-2px);
    background-color: var(--accent-color-dark);
}

.intro-btn {
    background-color: var(--accent-color);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    font-family: var(--font-mono);
    margin: 0 10px;
    display: inline-block;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.intro-btn:hover {
    background-color: var(--accent-color-dark);
    transform: translateY(-3px) scale(1.05);
}

.intro-buttons-container.visible .intro-btn {
    animation: fade-in-up 0.5s ease forwards;
}

.intro-buttons-container.visible .intro-btn:nth-child(1) { animation-delay: 0.2s; }
.intro-buttons-container.visible .intro-btn:nth-child(2) { animation-delay: 0.3s; }
.intro-buttons-container.visible .intro-btn:nth-child(3) { animation-delay: 0.4s; }
.intro-buttons-container.visible .intro-btn:nth-child(4) { animation-delay: 0.5s; }

/* --- Navigation --- */
.navbar {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
    border-bottom: 1px solid var(--border-color);
    box-sizing: border-box;
    width: 100%;
    background-color: var(--navbar-bg);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.navbar-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    box-sizing: border-box;
    position: relative;
}

.navbar.hidden-up {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.site-name {
    position: absolute;
    left: var(--spacing-xl);
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 400;
    color: var(--primary-text-color);
    text-decoration: none;
    letter-spacing: -0.01em;
    transition: color var(--transition-fast);
}

.site-name:hover {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
    position: relative;
}

.nav-link {
    color: var(--secondary-text-color);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    position: relative;
    z-index: 2;
    transition: color var(--transition-normal);
}

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

.nav-link.active {
    color: #FFFFFF;
    font-weight: 700;
}

.nav-pill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: var(--accent-color);
    border-radius: var(--radius-sm);
    z-index: 1;
    transition: transform var(--transition-smooth), width var(--transition-smooth);
}

.nav-item.hide-initially {
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

body.intro-done .nav-item.hide-initially {
    opacity: 1;
    visibility: visible;
}

/* --- Hamburger Menu --- */
.hamburger {
    display: none;
    cursor: pointer;
    background: transparent;
    border: none;
    padding: 0;
    z-index: var(--z-hamburger);
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all var(--transition-normal);
    background-color: var(--primary-text-color);
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-overlay-bg);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    padding: var(--spacing-xl);
    box-sizing: border-box;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg-color);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 1100px;
    max-height: calc(100vh - 4rem);
    overflow: hidden;
    position: relative;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
    border: 1px solid var(--border-color);
    display: flex;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-body {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    width: 100%;
}

.modal-media-container {
    width: 100%;
    background-color: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 16 / 9;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-details {
    position: relative;
    height: 100%;
    max-height: 65vh;
    overflow-y: auto;
    padding-right: var(--spacing-md);
    scrollbar-width: thin;
    scrollbar-color: var(--accent-color) transparent;
}

.modal-details::-webkit-scrollbar {
    width: 12px;
}

.modal-details::-webkit-scrollbar-track {
    background: transparent;
}

.modal-details::-webkit-scrollbar-thumb {
    background-color: var(--accent-color);
    border-radius: 10px;
    border: 3px solid var(--bg-color);
}

.modal-details::-webkit-scrollbar-thumb:hover {
    background-color: var(--accent-color-dark);
}

.modal-details #modal-title {
    margin-top: 0;
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-heading);
    font-weight: 400;
}

#modal-ux-design h4,
#modal-tech-breakdown h4 {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--secondary-text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

#modal-ux-design ul,
#modal-tech-breakdown ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#modal-ux-design li,
#modal-tech-breakdown li {
    padding-left: var(--spacing-lg);
    position: relative;
    margin-bottom: 0.75rem;
    color: var(--secondary-text-color);
}

#modal-ux-design li strong,
#modal-tech-breakdown li strong {
    color: var(--primary-text-color);
    font-weight: 500;
}

#modal-ux-design li::before,
#modal-tech-breakdown li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 700;
}

.modal-details #modal-repo-link {
    display: inline-block;
    margin-top: var(--spacing-lg);
}

.modal-close-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 2.5rem;
    color: var(--secondary-text-color);
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
    padding: var(--spacing-xs);
    z-index: 20;
}

.modal-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--card-hover-bg);
    color: var(--primary-text-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    padding: 0.75rem;
    font-size: 1.5rem;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.modal-nav:hover {
    background-color: var(--bg-soft-accent);
}

.modal-nav-prev {
    left: var(--spacing-xl);
}

.modal-nav-next {
    right: var(--spacing-xl);
}

.youtube-embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* --- Interest Cards --- */
.interest-card {
    cursor: pointer;
    transition: all var(--transition-normal);
}

.interest-card:hover:not(.disabled) {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    background-color: var(--card-hover-bg);
}

.interest-card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.interest-card.disabled:hover {
    transform: none;
    border-color: var(--border-color);
    background-color: var(--card-bg-color);
}

.back-to-menu {
    background: none;
    border: none;
    cursor: pointer;
    margin-bottom: var(--spacing-lg);
}

/* --- Theme Toggle --- */
.nav-actions {
    position: absolute;
    right: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-text-color);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    color: var(--primary-text-color);
    border-color: var(--accent-color);
}

/* In dark mode: show sun icon, hide moon */
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }

/* In light mode: show moon icon, hide sun */
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* --- Puzzle Button (Bio Page Only) --- */
.puzzle-btn {
    position: absolute;
    left: calc(var(--spacing-xl) + 110px);
    display: none;
    align-items: center;
    gap: 6px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    color: var(--secondary-text-color);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.puzzle-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.puzzle-btn.active {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background-color: rgba(139, 92, 246, 0.1);
    animation: none;
}

.puzzle-btn.visible:not(.active) {
    animation: neon-glow 2s ease-in-out infinite;
}

@keyframes neon-glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(139, 92, 246, 0.3), 0 0 10px rgba(139, 92, 246, 0.1);
        border-color: rgba(139, 92, 246, 0.5);
    }
    50% {
        box-shadow: 0 0 10px rgba(139, 92, 246, 0.6), 0 0 20px rgba(139, 92, 246, 0.3), 0 0 30px rgba(139, 92, 246, 0.1);
        border-color: rgba(139, 92, 246, 0.9);
        color: var(--accent-color);
    }
}

.puzzle-btn.visible {
    display: flex;
}

/* --- Puzzle Mode Styles --- */
.puzzle-ghost {
    border: 2px dashed var(--accent-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-soft-accent) !important;
    opacity: 0.6;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: default;
    transition: none !important;
}

.puzzle-ghost:hover {
    transform: none !important;
    border-color: var(--accent-color) !important;
    background-color: var(--bg-soft-accent) !important;
}

.puzzle-ghost::after {
    content: attr(data-ghost-label);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-color);
    opacity: 0.7;
    text-align: center;
    padding: var(--spacing-sm);
}

/* --- Puzzle Tile (floating label card, Google Gravity style) --- */
.puzzle-tile {
    position: fixed;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    box-sizing: border-box;
    background-color: var(--card-bg-color);
    border: 2px solid var(--accent-color);
    border-radius: var(--radius-sm);
    color: var(--primary-text-color);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: grab;
    user-select: none;
    touch-action: none;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
    will-change: left, top, width, height;
}

/* Spawning: smooth shrink from original tile size → label-card size */
.puzzle-tile.puzzle-tile-spawning {
    transition: left 0.45s cubic-bezier(.25,1,.5,1),
                top 0.45s cubic-bezier(.25,1,.5,1),
                width 0.45s cubic-bezier(.25,1,.5,1),
                height 0.45s cubic-bezier(.25,1,.5,1);
    pointer-events: none;
}

/* Returning to ghost (snap or Thor’s hammer) */
.puzzle-tile.puzzle-tile-returning {
    transition: left 0.45s cubic-bezier(.25,1,.5,1),
                top 0.45s cubic-bezier(.25,1,.5,1),
                width 0.45s cubic-bezier(.25,1,.5,1),
                height 0.45s cubic-bezier(.25,1,.5,1),
                opacity 0.3s ease 0.2s,
                border-radius 0.45s ease;
    pointer-events: none;
}

.puzzle-tile.dragging {
    cursor: grabbing;
    z-index: 10001;
    box-shadow: 0 14px 48px rgba(139, 92, 246, 0.5);
    border-color: var(--accent-color);
    background-color: rgba(139, 92, 246, 0.12);
}