/**
 * Advanced Student Portal - Main Stylesheet (Redesigned)
 * 
 * Clean, professional academic UI design
 * @package Student_Portal
 * @version 2.0.0
 */

/* Google Font Import - Inter for clean academic look */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ========================================
   CSS Variables - Clean Academic Theme
   ======================================== */
:root {
    /* Primary Brand Color - Professional University Blue */
    --sp-primary: #1e40af;
    --sp-primary-dark: #1e3a8a;
    --sp-primary-light: #3b82f6;
    
    /* Secondary & Status Colors */
    --sp-success: #059669;
    --sp-danger: #dc2626;
    --sp-warning: #d97706;
    --sp-info: #0284c7;
    
    /* Neutral Colors - Clean Academic Palette */
    --sp-white: #ffffff;
    --sp-gray-50: #f8fafc;
    --sp-gray-100: #f1f5f9;
    --sp-gray-200: #e2e8f0;
    --sp-gray-300: #cbd5e1;
    --sp-gray-400: #94a3b8;
    --sp-gray-500: #64748b;
    --sp-gray-600: #475569;
    --sp-gray-700: #334155;
    --sp-gray-800: #1e293b;
    --sp-gray-900: #0f172a;
    
    /* Subtitle Muted Color */
    --sp-subtitle: #6b7280;
    
    /* Shadows - Soft and Professional */
    --sp-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --sp-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --sp-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --sp-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --sp-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --sp-radius-sm: 0.375rem;
    --sp-radius: 0.5rem;
    --sp-radius-lg: 0.75rem;
    --sp-radius-xl: 1rem;
    
    /* Transitions */
    --sp-transition: all 0.2s ease;
}

/* ========================================
   Base Styles
   ======================================== */
.student-portal-login-container,
.student-portal-dashboard {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--sp-gray-700);
    background-color: var(--sp-gray-50);
    min-height: 100vh;
    padding: 2rem;
    box-sizing: border-box;
}

.student-portal-login-container *,
.student-portal-dashboard * {
    box-sizing: border-box;
}

/* ========================================
   Login/Search Page Styles
   ======================================== */
.student-portal-login-wrapper,
.student-portal-search-wrapper {
    max-width: 450px;
    margin: 0 auto;
    background: var(--sp-white);
    border-radius: var(--sp-radius-xl);
    box-shadow: var(--sp-shadow-xl);
    overflow: hidden;
}

/* Header Section */
.student-portal-login-header,
.student-portal-search-header {
    background: var(--sp-white);
    padding: 2.5rem 2rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--sp-gray-100);
}

/* Logo - Reduced size, properly centered */
.student-portal-logo {
    max-width: 100px;
    max-height: 100px;
    height: auto;
    margin-bottom: 1.25rem;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

/* Main Heading - University Name */
.student-portal-login-header h1,
.student-portal-search-header h1 {
    font-size: 1.875rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--sp-gray-900);
    line-height: 1.3;
}

/* Subtitle - Student Information Portal */
.student-portal-subtitle {
    margin: 0;
    font-size: 1.0625rem;
    color: var(--sp-subtitle);
    font-weight: 400;
    letter-spacing: 0.01em;
}

/* Form Section */
.student-portal-form {
    padding: 2rem;
}

.student-portal-form-group {
    margin-bottom: 1.25rem;
}

.student-portal-form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--sp-gray-700);
    font-size: 0.9375rem;
}

/* Input Fields - Explicit height */
.student-portal-input {
    width: 100%;
    height: 46px;
    padding: 0 1rem;
    font-size: 1rem;
    color: var(--sp-gray-800);
    background-color: var(--sp-white);
    border: 1.5px solid var(--sp-gray-300);
    border-radius: var(--sp-radius);
    transition: var(--sp-transition);
}

.student-portal-input:focus {
    outline: none;
    border-color: var(--sp-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.student-portal-input::placeholder {
    color: var(--sp-gray-400);
}

/* Remember Me */
.student-portal-remember {
    display: flex;
    align-items: center;
}

.student-portal-remember label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal;
    cursor: pointer;
    margin-bottom: 0;
}

/* Buttons - Solid primary color, no gradient */
.student-portal-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--sp-radius);
    cursor: pointer;
    transition: var(--sp-transition);
    text-decoration: none;
    gap: 0.5rem;
}

.student-portal-btn-primary {
    background: var(--sp-primary);
    color: var(--sp-white);
    width: 100%;
    height: 46px;
}

.student-portal-btn-primary:hover {
    background: var(--sp-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--sp-shadow-md);
}

.student-portal-btn-secondary {
    background: var(--sp-gray-200);
    color: var(--sp-gray-700);
}

.student-portal-btn-secondary:hover {
    background: var(--sp-gray-300);
}

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

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

.student-portal-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Spinner */
.student-portal-btn .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: sp-spin 0.8s linear infinite;
}

@keyframes sp-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Messages */
.student-portal-message {
    padding: 1rem;
    border-radius: var(--sp-radius);
    margin-top: 1rem;
    text-align: center;
    font-size: 0.9375rem;
}

.student-portal-message.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.student-portal-message.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* Footer */
.student-portal-login-footer,
.student-portal-search-footer {
    padding: 1.25rem 2rem;
    background: var(--sp-gray-50);
    text-align: center;
    border-top: 1px solid var(--sp-gray-200);
}

.student-portal-login-footer p,
.student-portal-search-footer p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--sp-gray-500);
}

/* Already Logged In */
.student-portal-already-logged {
    text-align: center;
}

.student-portal-success-icon {
    width: 60px;
    height: 60px;
    background: var(--sp-success);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

/* ========================================
   Dashboard Styles
   ======================================== */
.student-portal-dashboard {
    max-width: 1200px;
    margin: 0 auto;
}

/* Dashboard Header - Clean white background */
.student-portal-dashboard-header {
    background: var(--sp-white);
    border-radius: var(--sp-radius-xl);
    padding: 2rem 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--sp-shadow-lg);
    border: 1px solid var(--sp-gray-200);
}

.student-portal-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.student-portal-welcome h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--sp-gray-900);
    margin: 0 0 0.25rem;
}

.student-portal-welcome p {
    margin: 0;
    color: var(--sp-gray-600);
    font-size: 1rem;
}

.student-portal-user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.student-portal-enrollment {
    background: var(--sp-gray-100);
    padding: 0.5rem 1rem;
    border-radius: var(--sp-radius);
    color: var(--sp-gray-700);
    font-weight: 500;
    font-size: 0.9375rem;
}

.student-portal-status {
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.student-portal-status.active {
    background: #d1fae5;
    color: #065f46;
}

.student-portal-status.inactive {
    background: #fee2e2;
    color: #991b1b;
}

/* Dashboard Content */
.student-portal-dashboard-content {
    display: grid;
    gap: 1.5rem;
}

/* Cards */
.student-portal-card {
    background: var(--sp-white);
    border-radius: var(--sp-radius-lg);
    box-shadow: var(--sp-shadow);
    overflow: hidden;
    transition: var(--sp-transition);
    border: 1px solid var(--sp-gray-200);
}

.student-portal-card:hover {
    box-shadow: var(--sp-shadow-md);
}

.student-portal-card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--sp-gray-100);
    background: var(--sp-gray-50);
}

.student-portal-card-header h2 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--sp-gray-800);
}

.student-portal-card-body {
    padding: 1.5rem;
}

/* Data Grid */
.student-portal-data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.student-portal-data-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.student-portal-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--sp-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.student-portal-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--sp-gray-800);
}

/* Documents Section */
.student-portal-documents-card .student-portal-card-body {
    padding: 2rem;
}

.student-portal-documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.student-portal-document-item {
    text-align: center;
    padding: 2rem;
    background: var(--sp-gray-50);
    border-radius: var(--sp-radius-lg);
    transition: var(--sp-transition);
    border: 1px solid var(--sp-gray-200);
}

.student-portal-document-item:hover {
    background: var(--sp-gray-100);
    transform: translateY(-2px);
    box-shadow: var(--sp-shadow-md);
}

.document-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.student-portal-document-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--sp-gray-800);
    margin: 0 0 0.5rem;
}

.student-portal-document-item p {
    color: var(--sp-gray-600);
    margin: 0 0 1.5rem;
    font-size: 0.9375rem;
}

/* Dashboard Footer */
.student-portal-dashboard-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--sp-gray-200);
    text-align: center;
}

/* Not Logged In */
.student-portal-not-logged-in {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.student-portal-not-logged-in-content {
    text-align: center;
    background: var(--sp-white);
    padding: 3rem;
    border-radius: var(--sp-radius-xl);
    box-shadow: var(--sp-shadow-lg);
    max-width: 400px;
    border: 1px solid var(--sp-gray-200);
}

.student-portal-lock-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.student-portal-not-logged-in-content h2 {
    font-size: 1.5rem;
    color: var(--sp-gray-800);
    margin: 0 0 1rem;
}

.student-portal-not-logged-in-content p {
    color: var(--sp-gray-600);
    margin: 0 0 1.5rem;
}

/* ========================================
   Search Section (Dashboard Page)
   ======================================== */
.student-portal-search-section {
    background: var(--sp-white);
    border-radius: var(--sp-radius-xl);
    box-shadow: var(--sp-shadow-xl);
    overflow: hidden;
    border: 1px solid var(--sp-gray-200);
    margin-bottom: 2rem;
}

.student-portal-search-section .student-portal-search-header {
    background: var(--sp-white);
    padding: 2.5rem 2rem 1.5rem;
    border-bottom: 1px solid var(--sp-gray-100);
}

.student-portal-search-section .student-portal-logo {
    max-width: 100px;
    max-height: 100px;
    margin-bottom: 1rem;
}

.student-portal-search-section .student-portal-form {
    padding: 1.5rem 2rem 2rem;
}

.student-portal-search-section .student-portal-search-footer {
    background: var(--sp-gray-50);
    padding: 1rem 2rem;
}

/* ========================================
   Modal Styles
   ======================================== */
.student-portal-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
    backdrop-filter: blur(4px);
}

.student-portal-modal-content {
    background: var(--sp-white);
    border-radius: var(--sp-radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: sp-modal-slide 0.3s ease;
    box-shadow: var(--sp-shadow-xl);
}

@keyframes sp-modal-slide {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.student-portal-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--sp-gray-400);
    transition: var(--sp-transition);
    z-index: 10;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--sp-radius);
    background: var(--sp-gray-100);
}

.student-portal-modal-close:hover {
    color: var(--sp-gray-700);
    background: var(--sp-gray-200);
}

.student-portal-modal-actions {
    padding: 1.5rem;
    border-top: 1px solid var(--sp-gray-200);
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* ========================================
   ID Card Styles
   ======================================== */
.student-portal-id-card-container {
    padding: 0;
}

.student-portal-id-card {
    padding: 2rem;
}

.student-portal-id-card-header {
    text-align: center;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--sp-primary);
    margin-bottom: 1.5rem;
}

.id-card-logo img {
    max-height: 50px;
    margin-bottom: 0.5rem;
}

.student-portal-id-card-header h3 {
    margin: 0;
    color: var(--sp-primary);
    font-size: 1.125rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.student-portal-id-card-body {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.id-card-photo {
    width: 100px;
    height: 100px;
    background: var(--sp-gray-100);
    border-radius: var(--sp-radius);
    border: 3px solid var(--sp-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.photo-placeholder {
    font-size: 2rem;
    color: var(--sp-gray-400);
}

.id-card-details {
    flex: 1;
}

.id-card-field {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--sp-gray-100);
}

.id-card-field:last-child {
    border-bottom: none;
}

.id-card-field label {
    font-weight: 600;
    color: var(--sp-gray-600);
    font-size: 0.8125rem;
}

.id-card-field span {
    color: var(--sp-gray-800);
    font-weight: 500;
    font-size: 0.875rem;
}

.student-portal-id-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-top: 1.5rem;
    border-top: 1px solid var(--sp-gray-200);
}

.id-card-signature {
    text-align: right;
}

.signature-line {
    width: 150px;
    border-top: 2px solid var(--sp-gray-800);
    margin-bottom: 0.25rem;
}

.id-card-signature span {
    font-size: 0.75rem;
    color: var(--sp-gray-500);
}

/* ========================================
   Skeleton Loading
   ======================================== */
.student-portal-skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: sp-skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--sp-radius);
}

@keyframes sp-skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-text.short {
    width: 60%;
}

.skeleton-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

/* ========================================
   Responsive Styles
   ======================================== */
@media (max-width: 768px) {
    .student-portal-login-container,
    .student-portal-dashboard {
        padding: 1rem;
    }

    .student-portal-login-wrapper,
    .student-portal-search-wrapper {
        max-width: 100%;
    }

    .student-portal-login-header,
    .student-portal-search-header {
        padding: 2rem 1.5rem 1.5rem;
    }

    .student-portal-logo {
        max-width: 80px;
        max-height: 80px;
        margin-bottom: 1rem;
    }

    .student-portal-login-header h1,
    .student-portal-search-header h1 {
        font-size: 1.5rem;
    }

    .student-portal-subtitle {
        font-size: 1rem;
    }

    .student-portal-form {
        padding: 1.5rem;
    }

    .student-portal-dashboard-header {
        padding: 1.5rem;
    }

    .student-portal-header-content {
        flex-direction: column;
        text-align: center;
    }

    .student-portal-welcome h1 {
        font-size: 1.375rem;
    }

    .student-portal-welcome p {
        font-size: 0.9375rem;
    }

    .student-portal-data-grid {
        grid-template-columns: 1fr;
    }

    .student-portal-id-card-body {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .id-card-field {
        flex-direction: column;
        gap: 0.25rem;
        text-align: center;
    }

    .student-portal-id-card-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .id-card-signature {
        text-align: center;
    }

    .signature-line {
        margin: 0 auto;
    }

    .student-portal-user-info {
        flex-direction: column;
    }

    .student-portal-search-section .student-portal-search-header {
        padding: 2rem 1.5rem 1.5rem;
    }

    .student-portal-search-section .student-portal-form {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .student-portal-login-wrapper,
    .student-portal-search-wrapper {
        border-radius: var(--sp-radius-lg);
    }

    .student-portal-login-header h1,
    .student-portal-search-header h1 {
        font-size: 1.375rem;
    }

    .student-portal-documents-grid {
        grid-template-columns: 1fr;
    }

    .student-portal-document-item {
        padding: 1.5rem;
    }

    .student-portal-login-footer,
    .student-portal-search-footer {
        padding: 1rem 1.5rem;
    }

    .student-portal-btn {
        height: 46px;
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .student-portal-dashboard-header,
    .student-portal-dashboard-footer,
    .student-portal-modal-actions,
    .student-portal-card:not(.student-portal-documents-card) {
        display: none !important;
    }

    .student-portal-modal {
        position: static !important;
        background: none !important;
    }

    .student-portal-modal-content {
        box-shadow: none !important;
        max-width: none !important;
    }

    .student-portal-id-card-container {
        max-width: 100% !important;
    }

    .student-portal-id-card {
        border: 1px solid #ccc;
    }
}