@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-color: #050505;
    --surface-color: #111114;
    --surface-hover: #1a1a20;
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #8b5cf6;
    --accent-secondary: #06b6d4;
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --glass-bg: rgba(17, 17, 20, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background Gradients */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 0% 0%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
aside {
    width: 280px;
    background: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav ul {
    list-style: none;
}

nav li {
    margin-bottom: 0.5rem;
}

nav a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: 12px;
    transition: var(--transition);
    font-weight: 500;
}

nav a:hover, nav a.active {
    background: var(--surface-hover);
    color: var(--text-primary);
}

nav a.active {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-primary);
    box-shadow: inset 0 0 0 1px rgba(139, 92, 246, 0.2);
}

nav a i {
    font-size: 1.25rem;
}

/* Main Content */
main {
    flex: 1;
    margin-left: 280px;
    padding: 3rem;
    max-width: 1200px;
}

header {
    margin-bottom: 3rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Tool Container */
.tool-section {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.tool-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Tool Layout */
.tool-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

textarea {
    width: 100%;
    height: 300px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem;
    color: var(--text-primary);
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.95rem;
    resize: none;
    transition: var(--transition);
}

textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

button {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border-radius: 8px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
}

.btn-secondary {
    background: var(--surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.copy-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
}

.copy-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* Table Styling */
.table-container {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

th, td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition);
}

th:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.01);
}

.sort-icon {
    width: 14px;
    height: 14px;
    margin-left: 0.5rem;
    vertical-align: middle;
    opacity: 0.5;
}

/* User Agent Special Styling */
.ua-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ua-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
}

.ua-label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Timer Tool */
.timer-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.timer-display {
    font-size: 6rem;
    font-weight: 700;
    font-family: 'Monaco', 'Consolas', monospace;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 2rem 0;
    text-shadow: 0 0 30px rgba(139, 92, 246, 0.2);
    letter-spacing: -0.02em;
}

.timer-controls {
    width: 100%;
    margin-bottom: 2rem;
}

.timer-input-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.timer-input-wrapper label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#timer-mins {
    width: 80px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem;
    color: var(--text-primary);
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
}

.input-with-button {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.preset-group {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-preset {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-preset:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.button-group.central {
    justify-content: center;
}

#timer-stop:not(:disabled) {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.2);
}

#timer-stop:not(:disabled):hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Responsive */
@media (max-width: 1024px) {
    aside {
        width: 80px;
        padding: 2rem 1rem;
    }
    aside span, .logo span {
        display: none;
    }
    main {
        margin-left: 80px;
        padding: 2rem;
    }
    .tool-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    aside {
        display: none;
    }
    main {
        margin-left: 0;
    }
}