:root {
    /* Nuclear Red Palette */
    --primary: #E74C3C;
    --primary-hover: #C0392B;
    --secondary: #C0392B;
    --accent: #F39C12;
    --bg: #0D0D0D;
    
    --surface: rgba(30, 20, 20, 0.7);
    --surface-hover: rgba(45, 25, 25, 0.8);
    --border: rgba(231, 76, 60, 0.2);
    --border-hover: rgba(231, 76, 60, 0.5);
    
    --text: #FDFDFD;
    --text-muted: #A0A09A;
    --success: #2ECC71;
    --warning: #F39C12;
    
    --radius: 12px;
    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    /* subtle grid background */
    background-image: 
        linear-gradient(rgba(231, 76, 60, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(231, 76, 60, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
}

/* Glassmorphism utility */
.blur-effect {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
    z-index: 2;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-radius: var(--radius);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo .icon {
    font-size: 2rem;
    animation: pulseObj 2s infinite ease-in-out;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -1px;
    text-transform: uppercase;
}

.logo .highlight {
    color: var(--primary);
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
button {
    font-family: var(--font);
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nuke-btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
}

.nuke-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.6);
}

.nuke-btn:active {
    transform: translateY(1px);
}

.secondary-btn {
    background: rgba(255,255,255,0.05);
    color: var(--text);
    padding: 0.75rem 1.5rem;
    border: 1px solid rgba(255,255,255,0.1);
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.1);
}

.clear-btn {
    background: rgba(231, 76, 60, 0.1);
    color: var(--primary);
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

.clear-btn:hover {
    background: var(--primary);
    color: white;
}

.icon-btn {
    background: transparent;
    font-size: 1.2rem;
    padding: 0.5rem;
    opacity: 0.7;
}

.icon-btn:hover {
    opacity: 1;
    transform: rotate(90deg);
}

/* Quota Section */
.quota-section {
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.quota-section::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.quota-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.quota-header h2 {
    font-size: 1.25rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.quota-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.quota-used {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.quota-total {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.progress-bar-container {
    height: 12px;
    background: rgba(255,255,255,0.05);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    width: 0%;
    transition: width 1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.quota-subtext {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Cards */
.card {
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    min-height: 250px;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-title h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.badge {
    background: rgba(243, 156, 18, 0.15);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.size-indicator {
    text-align: center;
    padding: 1rem 0;
}

.size-val {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    text-shadow: 0 0 10px rgba(255,255,255,0.1);
}

.key-browser {
    flex: 1;
    background: rgba(0,0,0,0.3);
    border-radius: 8px;
    padding: 0.75rem;
    overflow-y: auto;
    max-height: 150px;
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.key-browser::-webkit-scrollbar {
    width: 6px;
}
.key-browser::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.browser-item {
    padding: 0.3rem 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.browser-item:last-child {
    border-bottom: none;
}

.browser-empty {
    text-align: center;
    padding: 2rem 0;
    opacity: 0.5;
    font-style: italic;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.85);
    z-index: 100;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--bg);
    padding: 3rem;
    border-radius: var(--radius);
    width: 100%;
    max-width: 600px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid var(--primary);
    box-shadow: 0 0 50px rgba(231, 76, 60, 0.3);
}

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

.danger-text {
    color: var(--primary);
    font-size: 2rem;
    text-shadow: 0 0 10px rgba(231, 76, 60, 0.5);
    animation: flashInfo 1s infinite alternate;
}

.comparison-view {
    background: rgba(0,0,0,0.5);
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: left;
    margin: 1rem 0;
    border: 1px solid rgba(255,255,255,0.1);
}

.comp-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-family: monospace;
    font-size: 1.1rem;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Explosion Animation */
.explosion-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: white;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
}

.explosion-overlay.trigger {
    animation: explode 1.5s cubic-bezier(0.075, 0.82, 0.165, 1) forwards;
}

@keyframes explode {
    0% { opacity: 0; background: white; }
    10% { opacity: 1; background: white; }
    30% { opacity: 0.8; background: var(--primary); }
    100% { opacity: 0; background: transparent; }
}

@keyframes pulseObj {
    0% { transform: scale(1); filter: drop-shadow(0 0 5px rgba(231, 76, 60, 0.5)); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 15px rgba(231, 76, 60, 0.8)); }
    100% { transform: scale(1); filter: drop-shadow(0 0 5px rgba(231, 76, 60, 0.5)); }
}

@keyframes flashInfo {
    from { opacity: 1; }
    to { opacity: 0.7; }
}

@media (max-width: 768px) {
    .app-container {
        padding: 1rem;
    }
    .grid {
        grid-template-columns: 1fr;
    }
    .header {
        flex-direction: column;
        gap: 1rem;
    }
}