/* Design Tokens - CSS Variables */
:root {
    /* Colors */
    --color-sidebar-bg: #1e293b;
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-darker: #1d4ed8;
    --color-bg: #f8fafc;
    --color-card: #ffffff;
    --color-border: #e2e8f0;
    --color-text-primary: #1e293b;
    --color-text-secondary: #64748b;
    --color-success: #10b981;
    --color-success-dark: #059669;
    --color-error: #ef4444;
    --color-error-dark: #dc2626;
    --color-warning: #f59e0b;
    --color-warning-dark: #d97706;
    --color-info: #3b82f6;
    --color-info-dark: #2563eb;
    --color-danger: #ef4444;
    --color-danger-dark: #dc2626;
    
    /* Layout */
    --sidebar-width: 272px;
    --header-height: 64px;
    --page-max-width: 1440px;
    
    /* Spacing */
    --spacing-base: 8px;
    --spacing-section: 24px;
    --spacing-card-padding: 16px;
    --spacing-card-padding-large: 24px;
    --spacing-gap: 16px;
    
    /* Border Radius */
    --radius-card: 12px;
    --radius-button: 8px;
    --radius-input: 6px;
    --border-width: 1px;
    
    /* Typography */
    --font-size-page-title: 22px;
    --font-size-section-title: 16px;
    --font-size-body: 14px;
    --font-size-small: 12px;
    --line-height-base: 1.4;
    --line-height-tight: 1.5;
}

/* Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--font-size-body);
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
}

.container {
    max-width: var(--page-max-width);
}

/* Card Styles */
.card {
    background: var(--color-card);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-card);
    padding: var(--spacing-card-padding);
}

.card-large {
    padding: var(--spacing-card-padding-large);
}

/* Button Styles */
.btn {
    border-radius: var(--radius-button);
    font-weight: 500;
    transition: all 0.2s ease;
    padding: var(--spacing-base) var(--spacing-gap);
    font-size: var(--font-size-body);
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    gap: var(--spacing-base);
}

/* Primary Button - Albastru */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
    border: 1px solid var(--color-primary);
}

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

.btn-primary:active {
    background-color: var(--color-primary-darker);
    border-color: var(--color-primary-darker);
}

/* Secondary Button - Gri */
.btn-secondary {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: #e2e8f0;
    border-color: #cbd5e1;
    color: var(--color-text-primary);
}

/* Success Button - Verde */
.btn-success {
    background-color: var(--color-success);
    color: white;
    border: 1px solid var(--color-success);
}

.btn-success:hover {
    background-color: var(--color-success-dark);
    border-color: var(--color-success-dark);
    color: white;
}

/* Danger Button - Roșu */
.btn-danger {
    background-color: var(--color-danger);
    color: white;
    border: 1px solid var(--color-danger);
}

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

/* Warning Button - Galben */
.btn-warning {
    background-color: var(--color-warning);
    color: white;
    border: 1px solid var(--color-warning);
}

.btn-warning:hover {
    background-color: var(--color-warning-dark);
    border-color: var(--color-warning-dark);
    color: white;
}

/* Info Button - Albastru deschis */
.btn-info {
    background-color: var(--color-info);
    color: white;
    border: 1px solid var(--color-info);
}

.btn-info:hover {
    background-color: var(--color-info-dark);
    border-color: var(--color-info-dark);
    color: white;
}

/* Outline Buttons */
.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

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

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

.btn-outline-secondary:hover {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
}

.btn-outline-danger {
    background-color: transparent;
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

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

/* Button Sizes */
.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-size-small);
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

/* Button States */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn:disabled:hover {
    background-color: inherit;
    border-color: inherit;
    color: inherit;
}

/* Form Styles */
.form-control {
    border-radius: var(--radius-input);
    border: var(--border-width) solid var(--color-border);
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
}

/* Typography */
.page-title {
    font-size: var(--font-size-page-title);
    font-weight: 600;
    margin-bottom: var(--spacing-section);
}

.section-title {
    font-size: var(--font-size-section-title);
    font-weight: 600;
    margin-bottom: var(--spacing-gap);
}

.text-small {
    font-size: var(--font-size-small);
}

/* Auth Pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-section);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-section);
}

.auth-title {
    font-size: var(--font-size-page-title);
    font-weight: 600;
    margin-bottom: var(--spacing-base);
}

.auth-subtitle {
    color: #64748b;
    font-size: var(--font-size-body);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-section);
    padding-top: var(--spacing-section);
    border-top: var(--border-width) solid var(--color-border);
}

.auth-link {
    color: var(--color-primary);
    text-decoration: none;
}

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

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

.dashboard-sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-sidebar-bg);
    color: white;
    padding: var(--spacing-section);
}

.dashboard-main {
    flex: 1;
    padding: var(--spacing-section);
}

.dashboard-header {
    height: var(--header-height);
    background-color: var(--color-card);
    border-bottom: var(--border-width) solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-section);
}

/* Utility Classes */
.text-success {
    color: var(--color-success) !important;
}

.text-error {
    color: var(--color-error) !important;
}

.text-warning {
    color: var(--color-warning) !important;
}

.text-info {
    color: var(--color-info) !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    
    .dashboard-sidebar {
        width: 100%;
        height: auto;
    }
    
    .auth-card {
        margin: var(--spacing-gap);
    }
}