/* ===================================
   OJS - Open Journal System
   Main Stylesheet
   =================================== */

/* ===================================
   CSS Variables - Design System
   =================================== */
:root {
    /* Color Palette - Blue & Ivory Academic Theme */
    --color-primary: #002147;          /* Oxford Blue */
    --color-primary-dark: #001529;     /* Darker Oxford Blue */
    --color-primary-light: #003d7a;    /* Light Oxford Blue */
    --color-secondary: #F5F5DC;        /* Beige/Ivory */
    --color-accent: #003371;           /* Oxford Blue Light */
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #17a2b8;
    
    /* Neutral Colors */
    --color-dark: #333333;
    --color-gray: #666666;
    --color-gray-light: #999999;
    --color-light: #F8F9FA;
    --color-white: #FFFFFF;
    
    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Georgia', 'Times New Roman', serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===================================
   Global Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
    overflow-x: hidden;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
}

h2 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ===================================
   Layout Components
   =================================== */
.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

.content {
    background: white;
    min-height: calc(100vh - 200px);
}

/* ===================================
   Header & Navigation
   =================================== */
.app-header {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.75rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.app-logo {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    text-decoration: none;
    transition: opacity var(--transition-base);
    line-height: 1.2;
}

.app-logo span:first-child {
    font-weight: 900;
    font-size: 1.4rem;
}

.app-logo span:last-child {
    font-weight: 300;
    font-size: 0.7rem;
    opacity: 0.9;
}

.app-logo:hover {
    opacity: 0.9;
    color: var(--color-white);
}

/* Navigation */
.nav-menu {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
    flex-wrap: nowrap;
}

.nav-link {
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-block;
    white-space: nowrap;
    font-size: 0.9rem;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.25);
    font-weight: var(--font-weight-bold);
}

.nav-link.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    padding: 0.4rem 1rem;
}

.nav-link.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

/* Dropdown Navigation */
.nav-dropdown {
    position: relative;
}

.nav-dropdown:hover .nav-dropdown-menu {
    display: block;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    margin-top: 0.3rem;
    padding: 0.4rem 0;
    list-style: none;
    z-index: 1000;
}

.nav-dropdown-menu li {
    margin: 0;
}

.nav-dropdown-menu a {
    display: block;
    padding: 0.6rem 0.9rem;
    color: var(--color-dark);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: var(--font-weight-normal);
    font-size: 0.85rem;
}

.nav-dropdown-menu a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ===================================
   Footer
   =================================== */
.app-footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-section h4 {
    color: var(--color-secondary);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.footer-text {
    font-size: 0.875rem;
    opacity: 0.7;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-base);
    font-size: 0.9375rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
}

.footer-bottom p {
    margin: 0.25rem 0;
    font-size: 0.875rem;
    opacity: 0.7;
}

.app-footer a {
    color: var(--color-white);
    opacity: 0.8;
    transition: opacity var(--transition-base);
}

.app-footer a:hover {
    opacity: 1;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 1rem;
    line-height: 1.5;
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Button Sizes */
.btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* Button Variants */
.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

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

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

.btn-secondary:hover {
    background: #E8E8CD;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-success:hover {
    background: #45a049;
}

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

.btn-danger:hover {
    background: #da190b;
}

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

.btn-warning:hover {
    background: #e68900;
}

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

.btn-info:hover {
    background: #0b7dda;
}

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

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

/* ===================================
   Cards
   =================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-light);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

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

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-light);
    background: var(--color-light);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #ddd;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 33, 71, 0.1);
}

.form-control.is-invalid {
    border-color: var(--color-danger);
}

.form-control.is-valid {
    border-color: var(--color-success);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

/* ===================================
   Utilities
   =================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--color-gray);
}

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

.text-danger {
    color: var(--color-danger);
}

.text-success {
    color: var(--color-success);
}

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.align-items-center {
    align-items: center;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }
.gap-5 { gap: var(--spacing-xl); }

/* ===================================
   Blazor Specific Styles
   =================================== */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--color-success);
}

.invalid {
    outline: 1px solid var(--color-danger);
}

.validation-message {
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

/* Loading Spinner */
.loading-spinner {
    border: 3px solid var(--color-light);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

/* ===================================
   Print Styles
   =================================== */
@media print {
    .no-print {
        display: none !important;
    }
    
    .app-header,
    .app-footer {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1200px) {
    .app-logo span:last-child {
        display: none;
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        gap: 0.4rem;
    }
    
    .nav-link {
        padding: 0.35rem 0.6rem;
        font-size: 0.85rem;
    }
    
    .nav-link.btn-secondary {
        padding: 0.35rem 0.8rem;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .app-header {
        padding: var(--spacing-md) 0;
    }
    
    .app-logo {
        font-size: 1.25rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
        width: 100%;
        margin-top: var(--spacing-md);
    }
    
    .nav-link {
        text-align: center;
        width: 100%;
    }
    
    .nav-dropdown-menu {
        position: static;
        display: none;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 0;
        margin: 0;
        padding: 0;
    }
    
    .nav-dropdown-menu a {
        color: var(--color-white);
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .nav-dropdown-menu a:hover {
        background: rgba(255, 255, 255, 0.2);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .btn-lg {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
    }
    
    .card {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
}

/* ===================================
   Accessibility
   =================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}