/* =========================================================
   CHRSO PLATFORM - COMMON STYLES
   Shared design system for all pages  (MariaDB-green palette)
   ========================================================= */

/* ---------------------------------------------------------
   RESET & BASE STYLES
--------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--gray-800);          /* #1f2937 */
    line-height: 1.6;
    min-height: 100vh;
    background-color: var(--gray-50); /* #f9fafb */
    margin-bottom: 100px;
}

/* ---------------------------------------------------------
   BRAND COLORS & VARIABLES  (kept intact)
--------------------------------------------------------- */
:root {
    /* Primary gradient */
    --primary-gradient: linear-gradient(135deg, #E6F4F1 0%, #0D8069 100%);
    --teal-light: #E6F4F1;
    --teal-dark: #0D8069;
    --teal-darker: #0A5E4E;

    /* Grays */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Status colors */
    --success-bg: #d4edda;
    --success-text: #155724;
    --success-border: #c3e6cb;

    --error-bg: #f8d7da;
    --error-text: #721c24;
    --error-border: #f5c6cb;

    --info-bg: #d1ecf1;
    --info-text: #0c5460;
    --info-border: #bee5eb;

    --warning-bg: #fff3cd;
    --warning-text: #856404;
    --warning-border: #ffeaa7;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* ---------------------------------------------------------
   LOGO
--------------------------------------------------------- */
.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-icon {
    width: 60px;
}

.logo-text {
    font-size: 28px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---------------------------------------------------------
   BUTTONS
--------------------------------------------------------- */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #FFFFFF;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(13, 128, 105, 0.25);
}

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

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: #FFFFFF;
    color: var(--teal-dark);
    border: 2px solid var(--teal-dark);
}

.btn-secondary:hover {
    background: var(--gray-50);
}

.btn-danger {
    background: #EF4444;
    color: #FFFFFF;
}

.btn-danger:hover {
    background: #DC2626;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.25);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

/* ---------------------------------------------------------
   FORMS
--------------------------------------------------------- */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--gray-700);
    font-weight: 600;
    font-size: 14px;
}

.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: #FFFFFF;
    color: var(--gray-800);
}

.form-control:focus,
input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--teal-dark);
    box-shadow: 0 0 0 3px rgba(13, 128, 105, 0.15);
}

.form-control::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--gray-400);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
    accent-color: var(--teal-dark);
}

/* ---------------------------------------------------------
   LINKS
--------------------------------------------------------- */
.link {
    color: var(--teal-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.link:hover {
    color: var(--teal-dark);
    text-decoration: underline;
}

/* ---------------------------------------------------------
   MESSAGES & ALERTS
--------------------------------------------------------- */
.message {
    margin-top: var(--space-md);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    display: none;
}

.message.show {
    display: block;
}

.message.success {
    background: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
}

.message.error {
    background: var(--error-bg);
    color: var(--error-text);
    border: 1px solid var(--error-border);
}

.message.info {
    background: var(--info-bg);
    color: var(--info-text);
    border: 1px solid var(--info-border);
}

.message.warning {
    background: var(--warning-bg);
    color: var(--warning-text);
    border: 1px solid var(--warning-border);
}

/* ---------------------------------------------------------
   LOADERS & SPINNERS
--------------------------------------------------------- */
.loader,
.spinner {
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-left-color: #FFFFFF;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    animation: spin 0.8s linear infinite;
}

.spinner-large {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

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

/* ---------------------------------------------------------
   CONTAINERS
--------------------------------------------------------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-sm {
    max-width: 800px;
}

/* ---------------------------------------------------------
   CARDS
--------------------------------------------------------- */
.card {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-lg);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    margin-bottom: var(--space-lg);
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-sm);
}

.card-subtitle {
    font-size: 14px;
    color: var(--gray-600);
}

/* ---------------------------------------------------------
   GRID SYSTEMS
--------------------------------------------------------- */
.grid {
    display: grid;
    gap: var(--space-lg);
}

/* ---------------------------------------------------------
   UTILITIES
--------------------------------------------------------- */
.text-center { text-align: center; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.hidden { display: none !important; }

/* ---------------------------------------------------------
   ANIMATIONS
--------------------------------------------------------- */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-slide-up {
    animation: slideUp 0.4s ease;
}

.animate-fade-in {
    animation: fadeIn 0.3s ease;
}

/* ---------------------------------------------------------
   RESPONSIVE UTILITIES
--------------------------------------------------------- */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .show-mobile { display: none !important; }
}