/* ============================================
   VitaTab - Common Styles & Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a14;
    --bg-secondary: #12121e;
    --bg-card: #1a1a2e;
    --bg-card-hover: #222238;
    --bg-input: #0f0f1a;
    --bg-header: #16162a;
    
    /* Accent Colors */
    --accent-primary: #4361ee;
    --accent-primary-hover: #3651d4;
    --accent-success: #00c853;
    --accent-success-dim: rgba(0, 200, 83, 0.15);
    --accent-warning: #ffab00;
    --accent-warning-dim: rgba(255, 171, 0, 0.15);
    --accent-danger: #ff1744;
    --accent-danger-dim: rgba(255, 23, 68, 0.15);
    --accent-info: #00b0ff;
    --accent-info-dim: rgba(0, 176, 255, 0.15);
    
    /* EMS Colors */
    --ems-red: #e63946;
    --ems-blue: #457b9d;
    --ems-green: #2a9d8f;
    --ems-orange: #e76f51;
    --ems-yellow: #f4a261;
    
    /* Text Colors */
    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-muted: #555570;
    --text-bright: #ffffff;
    
    /* Border */
    --border-color: #2a2a40;
    --border-light: #333350;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow-blue: 0 0 20px rgba(67, 97, 238, 0.3);
    --shadow-glow-green: 0 0 20px rgba(0, 200, 83, 0.3);
    --shadow-glow-red: 0 0 20px rgba(255, 23, 68, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-info);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    font-family: var(--font-main);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
}

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

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #5a7cff);
    color: white;
    box-shadow: var(--shadow-glow-blue);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3651d4, #4a6cef);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--accent-success), #00e676);
    color: #0a0a14;
    box-shadow: var(--shadow-glow-green);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-danger), #ff5252);
    color: white;
    box-shadow: var(--shadow-glow-red);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-light);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 0.8rem 2rem;
    font-size: 1rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.form-control {
    width: 100%;
    padding: 0.6rem 0.8rem;
    font-family: var(--font-main);
    font-size: 0.875rem;
    color: var(--text-primary);
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

.form-control::placeholder {
    color: var(--text-muted);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238888a0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
    cursor: pointer;
}

select.form-control option {
    background-color: #1a1a2e;
    color: #e0e0e8;
    padding: 8px 12px;
    font-size: 0.875rem;
}

select.form-control option:checked {
    background-color: #4361ee;
    color: white;
}

select.form-control option:hover {
    background-color: #2a2a42;
}

select.form-control optgroup {
    background-color: #12121e;
    color: #8888a0;
    font-weight: 700;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

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

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-bright);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-success {
    background: var(--accent-success-dim);
    color: var(--accent-success);
}

.badge-danger {
    background: var(--accent-danger-dim);
    color: var(--accent-danger);
}

.badge-warning {
    background: var(--accent-warning-dim);
    color: var(--accent-warning);
}

.badge-info {
    background: var(--accent-info-dim);
    color: var(--accent-info);
}

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

table {
    width: 100%;
    border-collapse: collapse;
}

table th {
    padding: 0.75rem 1rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

table td {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

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

table tr:hover td {
    background: var(--bg-card-hover);
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-bright);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-input);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.3s ease, toastOut 0.3s ease 3.7s forwards;
    min-width: 280px;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100px); }
}

.toast-success {
    background: linear-gradient(135deg, #0a2e1a, #1a3e2a);
    border-left: 3px solid var(--accent-success);
    color: var(--accent-success);
}

.toast-error {
    background: linear-gradient(135deg, #2e0a0a, #3e1a1a);
    border-left: 3px solid var(--accent-danger);
    color: var(--accent-danger);
}

.toast-info {
    background: linear-gradient(135deg, #0a1a2e, #1a2a3e);
    border-left: 3px solid var(--accent-info);
    color: var(--accent-info);
}

/* Avatar */
.avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.avatar-sm { width: 28px; height: 28px; }
.avatar-lg { width: 48px; height: 48px; }
.avatar-xl { width: 64px; height: 64px; }

/* Status Indicator */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    margin-right: 6px;
}

.status-dot.online { background: var(--accent-success); box-shadow: 0 0 6px var(--accent-success); }
.status-dot.offline { background: var(--text-muted); }
.status-dot.busy { background: var(--accent-danger); box-shadow: 0 0 6px var(--accent-danger); }
.status-dot.warning { background: var(--accent-warning); box-shadow: 0 0 6px var(--accent-warning); }

/* Loading Spinner */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--accent-success); }
.text-danger { color: var(--accent-danger); }
.text-warning { color: var(--accent-warning); }
.text-info { color: var(--accent-info); }

.d-flex { display: flex; }
.d-grid { display: grid; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.w-100 { width: 100%; }
.hidden { display: none !important; }