/* Professional Educators Portal - Main Stylesheet */

:root {
    --primary-color: #1e3a8a;      /* Navy Blue */
    --secondary-color: #f59e0b;    /* Gold */
    --accent-color: #3b82f6;       /* Blue */
    --success-color: #10b981;      /* Green */
    --warning-color: #f59e0b;      /* Orange */
    --danger-color: #ef4444;       /* Red */
    --light-color: #f8fafc;        /* Light Gray */
    --dark-color: #1f2937;         /* Dark Gray */
    --white-color: #ffffff;        /* White */
    --text-color: #374151;         /* Text Color */
    --border-color: #e5e7eb;       /* Border Color */
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white-color);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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: 1rem;
    color: var(--text-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

/* Header Styles */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    box-shadow: var(--shadow);
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white-color) !important;
}

.navbar-nav .nav-link {
    color: var(--white-color) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white-color) !important;
}

.navbar-nav .nav-link.active {
    background-color: var(--secondary-color);
    color: var(--white-color) !important;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--white-color);
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white-color);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--white-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--white-color);
    border: 2px solid var(--secondary-color);
}

.btn-secondary:hover {
    background-color: #d97706;
    border-color: #d97706;
    color: var(--white-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Cards */
.card {
    background: var(--white-color);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    overflow: hidden;
}

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

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--white-color);
    padding: 1.5rem;
    border-bottom: none;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--text-color);
    margin-bottom: 1rem;
}

/* Forms */
.form-control {
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: var(--white-color);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(30, 58, 138, 0.25);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.form-select {
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: var(--white-color);
}

.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(30, 58, 138, 0.25);
    outline: none;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 0.5rem;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--accent-color);
}

/* Badges */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.badge.bg-primary {
    background-color: var(--primary-color) !important;
}

.badge.bg-secondary {
    background-color: var(--secondary-color) !important;
}

.badge.bg-success {
    background-color: var(--success-color) !important;
}

.badge.bg-warning {
    background-color: var(--warning-color) !important;
}

.badge.bg-danger {
    background-color: var(--danger-color) !important;
}

.badge.bg-info {
    background-color: var(--accent-color) !important;
}

/* Tables */
.table {
    background-color: var(--white-color);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--white-color);
    border: none;
    padding: 1rem;
    font-weight: 600;
}

.table tbody td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: var(--light-color);
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-title p {
    color: var(--text-color);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Features */
.feature-card {
    text-align: center;
    padding: 2rem;
    height: 100%;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--white-color);
    font-size: 2rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--primary-color) 100%);
    color: var(--white-color);
    padding: 3rem 0 1rem;
}

.footer h5 {
    color: var(--white-color);
    margin-bottom: 1rem;
}

.footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--white-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    margin-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Dashboard Styles */
.dashboard-sidebar {
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--accent-color) 100%);
    min-height: 100vh;
    padding: 2rem 0;
}

.dashboard-sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 0;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
}

.dashboard-sidebar .nav-link:hover,
.dashboard-sidebar .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white-color) !important;
    border-left-color: var(--secondary-color);
}

.dashboard-content {
    padding: 2rem;
    background-color: var(--light-color);
    min-height: 100vh;
}

.dashboard-header {
    background-color: var(--white-color);
    padding: 1.5rem 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white-color);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

/* Event Cards */
.event-card {
    margin-bottom: 2rem;
}

.event-date {
    background-color: var(--secondary-color);
    color: var(--white-color);
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
}

.event-location {
    color: var(--text-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.event-fee {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Publication Cards */
.publication-card {
    border-left: 4px solid var(--primary-color);
}

.publication-type {
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .dashboard-content {
        padding: 1rem;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .navbar-nav {
        text-align: center;
        margin-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        margin: 0.25rem 0;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

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

.bg-primary { background-color: var(--primary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }
.bg-light { background-color: var(--light-color) !important; }

.border-primary { border-color: var(--primary-color) !important; }
.border-secondary { border-color: var(--secondary-color) !important; }

.shadow { box-shadow: var(--shadow) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

.rounded { border-radius: 0.5rem !important; }
.rounded-lg { border-radius: 0.75rem !important; }

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .btn,
    .no-print {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000;
        box-shadow: none;
    }
    
    body {
        background: white;
        color: black;
    }
}