/* OKOA Semester Portal Custom Styles */

:root {
    --primary-color: #007bff;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

body.paper-view-open {
    overflow: hidden;
}

.paper-viewer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 1060;
    display: none;
    --paper-viewer-bar-height: 46px;
}

body.paper-view-open .paper-viewer-overlay {
    display: block;
}

.paper-viewer-bar {
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    background: #198754;
    color: #fff;
    box-sizing: border-box;
}

.paper-viewer-controls {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.paper-viewer-fab-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 38px;
    height: 38px;
    border-radius: 999px;
    border: 0;
    background: rgba(255,255,255,0.14);
    color: #fff;
    font-weight: 900;
    line-height: 1;
    display: none;
    align-items: center;
    justify-content: center;
}

body.paper-view-open.viewer-fullscreen .paper-viewer-bar {
    display: none;
}

body.paper-view-open.viewer-fullscreen .paper-viewer-fab-close {
    display: inline-flex;
}

.paper-viewer-title {
    font-weight: 700;
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-right: 10px;
}

.paper-viewer-frame {
    width: 100%;
    height: calc(100vh - var(--paper-viewer-bar-height, 46px));
    border: 0;
    background: #fff;
}

body.paper-view-open.viewer-fullscreen .paper-viewer-frame {
    height: 100vh;
}

/* Card Styles */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px 10px 0 0 !important;
    border: none;
    font-weight: 600;
}

/* Navbar Styles */
.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-text {
    font-size: 0.9rem;
}

 .navbar-search {
     width: 420px;
     max-width: 45vw;
 }

 .navbar-search .form-control {
     background: rgba(11, 15, 20, 0.92);
     border: 1px solid rgba(255,255,255,0.16);
     color: rgba(255,255,255,0.92);
     box-shadow: 0 0 0 2px rgba(42, 112, 255, 0.08);
 }

 .navbar-search .form-control::placeholder {
     color: rgba(255,255,255,0.55);
 }

 .navbar-search .form-control:focus {
     border-color: rgba(42, 112, 255, 0.55);
     box-shadow: 0 0 0 3px rgba(42, 112, 255, 0.20);
 }

 .navbar-search.search-box::before {
     left: 10px;
 }

 .navbar-search.search-box::before {
     color: rgba(255,255,255,0.62);
 }

/* Button Styles */
.btn {
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    border: none;
}

/* Form Styles */
.form-control {
    border-radius: 6px;
    border: 1px solid #e0e0e0;
    transition: border-color 0.2s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

/* Alert Styles */
.alert {
    border-radius: 8px;
    border: none;
    font-weight: 500;
}

.alert-dismissible .btn-close {
    padding: 0.75rem 1rem;
}

/* Table Styles */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table thead th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    font-weight: 600;
}

.table tbody tr:hover {
    background-color: rgba(0,123,255,0.05);
}

/* Login/Register Page Styles */
.min-vh-100 {
    min-height: 100vh;
}

.nav-tabs .nav-link {
    border-radius: 8px 8px 0 0;
    border: none;
    color: var(--dark-color);
    font-weight: 500;
}

.nav-tabs .nav-link.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Dashboard Card Styles */
.dashboard-card {
    transition: all 0.3s ease;
    cursor: pointer;
}

.dashboard-card:hover {
    transform: scale(1.02);
}

/* Search Box Styles */
.search-box {
    position: relative;
}

.search-box input {
    padding-left: 40px;
}

.search-box::before {
    content: "🔍";
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
}

/* Papers UI (portal) */
.papers-ui {
    background: radial-gradient(1200px 600px at 20% 0%, rgba(42, 112, 255, 0.18), rgba(0,0,0,0)),
                radial-gradient(900px 500px at 80% 10%, rgba(40, 167, 69, 0.18), rgba(0,0,0,0)),
                #0b0f14;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.28);
}

.papers-ui-header {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 14px;
}

.papers-ui-kicker {
    color: rgba(255,255,255,0.75);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.papers-ui-count {
    color: #ffffff;
    font-weight: 700;
    font-size: 16px;
    margin-top: 2px;
}

.papers-ui-filters {
    text-align: right;
}

.papers-ui-filter-label {
    color: rgba(255,255,255,0.75);
    font-size: 12px;
    margin-bottom: 6px;
}

.papers-ui-year-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.papers-chip {
    border-color: rgba(255,255,255,0.24) !important;
    color: rgba(255,255,255,0.92) !important;
    background: rgba(255,255,255,0.06) !important;
}

.papers-chip.active {
    border-color: rgba(42, 112, 255, 0.75) !important;
    background: rgba(42, 112, 255, 0.18) !important;
    color: #fff !important;
}

.papers-ui-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.papers-empty {
    padding: 18px;
    border-radius: 12px;
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.8);
    border: 1px solid rgba(255,255,255,0.08);
}

.paper-card {
    display: flex;
    align-items: stretch;
    gap: 12px;
    padding: 12px;
    border-radius: 14px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.10);
    box-shadow: 0 8px 26px rgba(0,0,0,0.22);
}

.paper-card:hover {
    background: rgba(255,255,255,0.075);
    border-color: rgba(255,255,255,0.14);
}

.paper-card-icon {
    flex: 0 0 auto;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(255, 77, 79, 0.9), rgba(255, 154, 0, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 18px rgba(0,0,0,0.25);
}

.paper-file-badge {
    background: rgba(255,255,255,0.92);
    color: #d7263d;
    font-weight: 900;
    font-size: 12px;
    padding: 6px 8px;
    border-radius: 10px;
    line-height: 1;
}

.paper-card-main {
    min-width: 0;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.paper-card-title {
    color: #fff;
    font-weight: 800;
    font-size: 15px;
    line-height: 1.25;
    word-break: break-word;
}

.paper-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
    align-items: center;
}

.paper-meta-pill {
    background: rgba(42, 112, 255, 0.18);
    border: 1px solid rgba(42, 112, 255, 0.35);
    color: rgba(255,255,255,0.92);
    font-size: 12px;
    padding: 3px 8px;
    border-radius: 999px;
}

.paper-meta-muted {
    color: rgba(255,255,255,0.75);
    font-size: 12px;
}

.paper-card-action {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

.paper-open-btn {
    border-radius: 12px;
    padding: 10px 14px;
    font-weight: 800;
}

/* Paper Card Styles */
.paper-card-legacy {
    border-left: 4px solid #007bff;
    transition: all 0.2s ease;
}

.paper-card-legacy:hover {
    border-left-width: 6px;
}

/* Statistics Styles */
.stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-card h4 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-card small {
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }

    .navbar {
        padding-top: 0.25rem;
        padding-bottom: 0.25rem;
    }

    .navbar-text {
        font-size: 0.8rem;
    }

    .navbar .container {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        row-gap: 0.35rem;
    }

    #menuToggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-right: 0.5rem;
    }

    .navbar-brand {
        order: 1;
        flex: 0 0 auto;
    }

    .navbar-nav {
        order: 2;
        margin-left: auto;
        width: auto;
        display: flex;
        flex-direction: row;
        align-items: center;
    }

    .navbar-nav .navbar-text {
        margin-right: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 55vw;
    }

    .navbar-search {
        order: 3;
        flex: 1 1 100%;
        width: 100%;
        max-width: 100%;
        margin-left: 0 !important;
        margin-top: 0.15rem;
    }

    .navbar-search .form-control {
        padding-top: 0.55rem;
        padding-bottom: 0.55rem;
    }

    .profile-drawer {
        width: 38vw;
        max-width: 360px;
        min-width: 240px;
    }
     
    .card {
        margin-bottom: 1rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }

    .papers-ui-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .papers-ui-filters {
        text-align: left;
        width: 100%;
    }

    .papers-ui-year-chips {
        justify-content: flex-start;
    }

    .paper-card {
        flex-direction: row;
        align-items: flex-start;
    }

    .paper-card-icon {
        width: 52px;
        height: 52px;
    }

    .paper-open-btn {
        padding: 10px 12px;
    }
}

/* Loading Spinner */
.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* File Upload Area */
.upload-area {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(0,123,255,0.05);
}

.upload-area.dragover {
    border-color: var(--success-color);
    background-color: rgba(40,167,69,0.1);
}

/* Profile Drawer */
body.profile-open {
    overflow: hidden;
}

body.profile-open #pageContent {
    filter: blur(4px);
    transition: filter 0.2s ease;
    pointer-events: none;
    user-select: none;
}

.profile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 1040;
}

.profile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 25vw;
    min-width: 280px;
    max-width: 360px;
    background: #ffffff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    transform: translateX(-105%);
    transition: transform 0.25s ease;
    z-index: 1050;
    display: flex;
    flex-direction: column;
}

.profile-drawer-header {
    padding: 14px 16px;
    border-bottom: 1px solid #e9ecef;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.profile-drawer-body {
    padding: 16px;
    overflow: auto;
}

body.profile-open .profile-overlay {
    opacity: 1;
    pointer-events: auto;
}

body.profile-open .profile-drawer {
    transform: translateX(0);
}

/* Footer Styles */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}