/* =============================================
   MULTI-SYSTEM MANAGEMENT PLATFORM - MAIN STYLES
   Modern, Premium Design with Animations
   ============================================= */

/* ===== CSS VARIABLES ===== */
:root {
    /* Primary Colors */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    /* Neutral Colors */
    --dark-bg: #0f0f23;
    --card-bg: #1a1a2e;
    --card-hover: #252540;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --border-color: rgba(255, 255, 255, 0.1);
    
    /* Accent Colors */
    --accent-purple: #667eea;
    --accent-pink: #f093fb;
    --accent-blue: #4facfe;
    --accent-green: #43e97b;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ===== GLOBAL RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== ANIMATED BACKGROUND ===== */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--dark-bg);
    overflow: hidden;
}

.animated-bg::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(240, 147, 251, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 40% 20%, rgba(79, 172, 254, 0.1) 0%, transparent 50%);
    animation: backgroundMove 20s ease-in-out infinite;
}

@keyframes backgroundMove {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-50px, -50px); }
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== CARDS ===== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--card-hover);
}

.card-gradient {
    position: relative;
    overflow: hidden;
}

.card-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    text-align: center;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent-purple);
    color: var(--accent-purple);
}

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

.btn-block {
    width: 100%;
    display: block;
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: rgba(255, 255, 255, 0.08);
}

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

select.form-control {
    cursor: pointer;
}

/* ===== LOGIN PAGE ===== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.login-card {
    width: 100%;
    max-width: 450px;
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.6s ease;
}

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

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-glow);
}

.login-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== DASHBOARD ===== */
.dashboard-header {
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-lg);
}

.dashboard-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

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

.systems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.system-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.system-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.system-card:hover::before {
    transform: scaleX(1);
}

.system-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-purple);
}

.system-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.system-card:hover .system-icon {
    transform: scale(1.1) rotate(5deg);
}

.system-card.mtc .system-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.system-card.sjmp .system-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.system-card.daces .system-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.system-card.tmk .system-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.system-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.system-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== NAVIGATION ===== */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.navbar-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-link:hover {
    color: var(--text-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* ===== TABLES ===== */
.table-container {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

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

.table thead {
    background: rgba(102, 126, 234, 0.1);
}

.table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.table tbody tr {
    transition: background 0.2s ease;
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(67, 233, 123, 0.2);
    color: var(--accent-green);
}

.badge-warning {
    background: rgba(254, 225, 64, 0.2);
    color: #fee140;
}

.badge-danger {
    background: rgba(245, 87, 108, 0.2);
    color: #f5576c;
}

.badge-info {
    background: rgba(79, 172, 254, 0.2);
    color: var(--accent-blue);
}

/* ===== ALERTS ===== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
}

.alert-success {
    background: rgba(67, 233, 123, 0.1);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.alert-error {
    background: rgba(245, 87, 108, 0.1);
    border-color: #f5576c;
    color: #f5576c;
}

.alert-info {
    background: rgba(79, 172, 254, 0.1);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .systems-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }