/* Design Tokens */
:root {
    --bg-main: hsl(224, 25%, 8%);
    --bg-card: hsla(224, 25%, 14%, 0.65);
    --border-color: hsla(224, 20%, 25%, 0.4);
    --border-hover: hsla(224, 20%, 35%, 0.6);
    
    --text-primary: hsl(0, 0%, 95%);
    --text-secondary: hsl(224, 15%, 70%);
    --text-muted: hsl(224, 12%, 50%);

    --accent-gradient: linear-gradient(135deg, hsl(265, 85%, 62%) 0%, hsl(215, 85%, 57%) 100%);
    --accent-gradient-hover: linear-gradient(135deg, hsl(265, 90%, 67%) 0%, hsl(215, 90%, 62%) 100%);
    --accent-glow: hsla(240, 85%, 60%, 0.35);

    --danger-color: hsl(354, 70%, 54%);
    --danger-hover: hsl(354, 80%, 59%);

    --font-header: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    position: relative;
}

/* Atmospheric Glow Background */
.background-glow {
    position: absolute;
    top: -10%;
    left: 20%;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(80px);
    z-index: -1;
    pointer-events: none;
}

/* App Container */
.app-container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 8px 24px var(--accent-glow);
}

.brand-text h1 {
    font-family: var(--font-header);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(120deg, #fff 40%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: hsla(224, 25%, 16%, 0.8);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: hsl(145, 80%, 45%);
    border-radius: 50%;
    box-shadow: 0 0 8px hsl(145, 80%, 45%);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 12px hsl(145, 80%, 50%); }
    100% { transform: scale(0.95); opacity: 0.5; }
}

/* Layout */
.app-main {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 2rem;
    flex-grow: 1;
}

@media (max-width: 900px) {
    .app-main {
        grid-template-columns: 1fr;
    }
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
    border-color: var(--border-hover);
}

.card-header {
    margin-bottom: 1.5rem;
}

.card-header h2 {
    font-family: var(--font-header);
    font-size: 1.4rem;
    margin-bottom: 0.4rem;
}

.card-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

input {
    width: 100%;
    background: hsla(224, 25%, 8%, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    color: white;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
    outline: none;
    border-color: hsl(215, 85%, 57%);
    box-shadow: 0 0 0 3px hsla(215, 85%, 57%, 0.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-danger {
    background: hsla(354, 70%, 54%, 0.2);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

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

.btn-icon {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    padding: 0.5rem;
    width: 36px;
    height: 36px;
}

.btn-icon:hover {
    border-color: var(--border-hover);
    color: white;
    transform: rotate(45deg);
}

.header-with-action {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Tables */
.table-container {
    overflow-x: auto;
    margin-top: 1rem;
}

.apk-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.apk-table th {
    color: var(--text-muted);
    font-weight: 500;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.apk-table td {
    padding: 1.2rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.apk-table tbody tr {
    transition: background-color 0.2s;
}

.apk-table tbody tr:hover {
    background-color: hsla(224, 25%, 20%, 0.2);
}

/* Queue List Specifics */
.app-name-cell {
    font-weight: 500;
    font-family: var(--font-header);
}

.package-cell {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.version-badge {
    background: hsla(215, 85%, 57%, 0.15);
    color: hsl(215, 85%, 65%);
    border: 1px solid hsla(215, 85%, 57%, 0.3);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: 0.5rem;
}

.url-link {
    color: hsl(215, 85%, 65%);
    text-decoration: none;
    max-width: 180px;
    display: inline-block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.url-link:hover {
    text-decoration: underline;
}

.date-cell {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Loading & Empty States */
.loading-row {
    text-align: center;
}

.spinner-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem 0;
    color: var(--text-secondary);
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid hsla(0, 0%, 100%, 0.1);
    border-top: 3px solid hsl(215, 85%, 57%);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.empty-row {
    text-align: center;
    color: var(--text-muted);
}

.empty-state {
    padding: 3rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.empty-state svg {
    color: var(--border-color);
    margin-bottom: 0.5rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: hsl(224, 25%, 16%);
    border: 1px solid var(--border-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    transition: opacity 0.3s, transform 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.toast.success {
    border-left: 4px solid hsl(145, 80%, 45%);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

/* Footer */
.app-footer {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Tab Switcher */
.tab-container-selector {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    background: hsla(224, 25%, 8%, 0.5);
    padding: 0.25rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    color: white;
}

.tab-btn.active {
    background: var(--bg-card);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem 1rem;
    text-align: center;
    background: hsla(224, 25%, 8%, 0.4);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    margin-top: 0.5rem;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: hsl(215, 85%, 57%);
    background: hsla(215, 85%, 57%, 0.05);
    color: white;
}

.drop-zone svg {
    color: var(--text-muted);
    transition: color 0.2s;
}

.drop-zone:hover svg, .drop-zone.dragover svg {
    color: hsl(215, 85%, 65%);
}

.drop-zone span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* File Info & Progress */
.file-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: hsla(224, 25%, 20%, 0.3);
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-top: 0.8rem;
}

.file-name {
    font-size: 0.85rem;
    color: white;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-sm {
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    width: auto;
}

.progress-bar-container {
    margin-top: 0.8rem;
    background: hsla(224, 25%, 8%, 0.8);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    background: var(--accent-gradient);
    height: 100%;
    width: 0%;
    transition: width 0.1s ease;
}

.progress-text {
    position: absolute;
    right: 0.5rem;
    top: -1.2rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.header-right {
    display: flex;
    align-items: center;
}