/* ============================================================================
   BASE.CSS - Global Styles for All Pages
   ============================================================================
   This file contains the global theme configuration, typography, and utility
   classes that apply to all pages of the application.
   ========================================================================== */

/* CSS Variables for Color Scheme */
:root {
    --primary-color: #164f90;
    --secondary-color: #c8c9c7;
    --accent-color: #164f90;
    --text-light: #ffffff;
    --text-dark: #164f90;
    --background-light: #ffffff;
    --border-color: #c8c9c7;
    --success-color: #4caf50;
    --error-color: #d32f2f;
    --warning-color: #ff9800;
}

/* Dark Mode Variables */
body.dark-mode {
    --background-light: #0b1020;
    --text-dark: #e8edf7;
    --border-color: #1a2a4a;
}

/* ============================================================================
   RESET AND BASE STYLES
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: var(--background-light);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
}

/* ============================================================================
   LAYOUT STRUCTURE
   ========================================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-fluid {
    width: 100%;
    padding: 0 30px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.col-md-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
}

.col-md-8 {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
}

/* ============================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    margin-top: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.1rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

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

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

ul, ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

/* Dark Mode Typography */
body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3,
body.dark-mode h4,
body.dark-mode h5,
body.dark-mode h6 {
    color: #9ec5ff;
}

body.dark-mode p,
body.dark-mode li {
    color: #e8edf7;
}

body.dark-mode a {
    color: #9ec5ff;
}

/* ============================================================================
   BUTTONS AND LINKS
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(180deg, #1e6bb8 0%, #0f3d6e 100%);
    color: var(--text-light);
    border: 1px solid #0a2d52;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.4),
                inset 0 -1px 0 rgba(0, 0, 0, 0.4);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.btn-primary:hover {
    background: linear-gradient(180deg, #2a7dd4 0%, #1e6bb8 50%, #0f3d6e 100%);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.5),
                inset 0 1px 0 rgba(255, 255, 255, 0.5),
                inset 0 -1px 0 rgba(0, 0, 0, 0.3);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border: 1px solid #a8a9a7;
}

.btn-secondary:hover {
    background-color: #b0b1af;
    color: #0f3d6e;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: var(--error-color);
    color: var(--text-light);
    border: 1px solid #b71c1c;
}

.btn-danger:hover {
    background-color: #c62828;
    transform: translateY(-2px);
}

.btn-success {
    background-color: var(--success-color);
    color: var(--text-light);
    border: 1px solid #388e3c;
}

.btn-success:hover {
    background-color: #45a049;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.btn-info {
    background-color: #17a2b8;
    color: var(--text-light);
    border: 1px solid #138496;
}

.btn-info:hover {
    background-color: #138496;
    transform: translateY(-2px);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
    transform: translateY(-2px);
}

.btn-outline-danger {
    background-color: transparent;
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.btn-outline-danger:hover {
    background-color: var(--error-color);
    color: var(--text-light);
    transform: translateY(-2px);
}

.btn-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn-group-sm .btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

/* ============================================================================
   CARDS AND SECTIONS
   ========================================================================== */

.card {
    background-color: var(--background-light);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(22, 79, 144, 0.25);
}

.section {
    margin-bottom: 3rem;
}

/* Dark Mode Cards */
body.dark-mode .card {
    background-color: #0f172a;
    border-color: #1f2937;
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.35);
}

body.dark-mode .card-header {
    background-color: #1f2937 !important;
    border-color: #374151;
    color: #e8edf7;
}

body.dark-mode .card-body {
    background-color: #0f172a;
    color: #e8edf7;
}

/* Table Styling in Dark Mode */
body.dark-mode .table {
    color: #e8edf7;
    border-color: #374151;
}

body.dark-mode .table thead {
    background-color: #1f2937;
    color: #e8edf7;
}

body.dark-mode .table thead th {
    border-color: #374151;
    background-color: #1f2937;
}

body.dark-mode .table tbody tr {
    border-color: #374151;
}

body.dark-mode .table tbody tr:hover {
    background-color: #1a2a4a !important;
}

/* ============================================================================
   FORMS AND INPUTS
   ========================================================================== */

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1.5rem;
}

.form-group label {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background-color: var(--background-light);
    color: #333;
}

.form-input:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 5px rgba(22, 79, 144, 0.2);
}

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

input[type="checkbox"],
input[type="radio"] {
    cursor: pointer;
}

/* Dark Mode Forms */
body.dark-mode .form-input,
body.dark-mode input[type="text"],
body.dark-mode input[type="email"],
body.dark-mode input[type="password"],
body.dark-mode input[type="number"],
body.dark-mode input[type="date"],
body.dark-mode textarea,
body.dark-mode select {
    background-color: #232d39;
    border-color: #3a4a5a;
    color: #e8edf7;
}

body.dark-mode .form-input:focus,
body.dark-mode input:focus,
body.dark-mode textarea:focus,
body.dark-mode select:focus {
    border-color: #9ec5ff;
    box-shadow: 0 0 5px rgba(158, 197, 255, 0.3);
}

body.dark-mode .form-group label {
    color: #9ec5ff;
}

/* Form Errors */
.form-errors {
    background-color: #ffebee;
    border: 1px solid var(--error-color);
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.form-errors p.error {
    color: var(--error-color);
    margin: 0.5rem 0;
}

.field-error {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

body.dark-mode .form-errors {
    background-color: #3d2c2c;
    border-color: var(--error-color);
}

body.dark-mode .field-error {
    color: #ff6b6b;
}

/* ============================================================================
   ALERTS AND MESSAGES
   ========================================================================== */

.messages {
    margin-bottom: 1.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
    border-left: 4px solid;
}

.alert-error,
.alert-danger {
    background-color: #ffebee;
    border-color: var(--error-color);
    color: var(--error-color);
}

.alert-success {
    background-color: #e8f5e9;
    border-color: var(--success-color);
    color: #2e7d32;
}

.alert-warning {
    background-color: #fff3e0;
    border-color: var(--warning-color);
    color: #e65100;
}

.alert-info {
    background-color: #e3f2fd;
    border-color: #2196f3;
    color: #1565c0;
}

/* Dark Mode Alerts */
body.dark-mode .alert-error,
body.dark-mode .alert-danger {
    background-color: #3d2c2c;
    color: #ff6b6b;
}

body.dark-mode .alert-success {
    background-color: #2d3d2c;
    color: #7cda6e;
}

/* ============================================================================
   UTILITY CLASSES
   ========================================================================== */

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

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

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

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

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

/* Text Color Utilities */
.text-danger {
    color: #d32f2f;
}

body.dark-mode .text-danger {
    color: #ff6b6b;
}

.text-success {
    color: #388e3c;
}

body.dark-mode .text-success {
    color: #7cda6e;
}

.text-warning {
    color: #e65100;
}

body.dark-mode .text-warning {
    color: #ffa500;
}

.text-info {
    color: #1565c0;
}

body.dark-mode .text-info {
    color: #4a9eff;
}

.text-muted {
    color: #6c757d;
}

body.dark-mode .text-muted {
    color: #9ca3af;
}

.text-light {
    color: #f8f9fa;
}

body.dark-mode .text-light {
    color: #e8edf7;
}

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

.bg-primary h1, .bg-primary h2, .bg-primary h3, 
.bg-primary h4, .bg-primary h5, .bg-primary h6,
.bg-success h1, .bg-success h2, .bg-success h3,
.bg-success h4, .bg-success h5, .bg-success h6,
.bg-danger h1, .bg-danger h2, .bg-danger h3,
.bg-danger h4, .bg-danger h5, .bg-danger h6 {
    color: inherit;
}

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

.bg-light {
    background-color: #f8f9fa;
    color: #000;
}

body.dark-mode .bg-light {
    background-color: #1f2937;
    color: #e8edf7;
}

/* Spacing Utilities */
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }

.ml-1 { margin-left: 1rem; }
.ml-2 { margin-left: 2rem; }
.ml-3 { margin-left: 3rem; }

.mr-1 { margin-right: 1rem; }
.mr-2 { margin-right: 2rem; }
.mr-3 { margin-right: 3rem; }

.p-1 { padding: 1rem; }
.p-2 { padding: 2rem; }
.p-3 { padding: 3rem; }

.pt-1 { padding-top: 1rem; }
.pt-2 { padding-top: 2rem; }
.pt-3 { padding-top: 3rem; }

.pb-1 { padding-bottom: 1rem; }
.pb-2 { padding-bottom: 2rem; }
.pb-3 { padding-bottom: 3rem; }

/* Display Utilities */
.d-none {
    display: none !important;
}

.d-block {
    display: block !important;
}

.d-inline {
    display: inline !important;
}

.d-flex {
    display: flex !important;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-1 {
    gap: 1rem;
}

.gap-2 {
    gap: 2rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ============================================================================
   LAYOUT AND MAIN CONTENT
   ========================================================================== */

.main-content {
    flex: 1;
    padding: 0;
    background-color: var(--background-light);
    min-height: 0;
    display: flex;
    flex-direction: column;
}

/* Navigation */
nav {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 1rem;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--text-light);
    text-align: center;
    padding: 1rem;
    width: 100%;
    margin-top: auto;
}

footer p {
    margin: 0;
}

footer a {
    color: var(--text-light);
    text-decoration: underline;
}

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

/* Dark Mode Footer */
body.dark-mode footer {
    background-color: #0a1324;
    color: #e8edf7;
}

/* ============================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 768px) {
    .row {
        flex-direction: column;
    }

    .col-md-4,
    .col-md-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .container {
        padding: 0 15px;
    }

    .container-fluid {
        padding: 0 15px;
    }

    .main-content {
        padding: 0;
    }

    ul, ol {
        margin-left: 1.5rem;
    }
}

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

    h2 {
        font-size: 1.25rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.65rem 1.2rem;
        font-size: 0.95rem;
    }

    .card {
        padding: 1.25rem;
    }
}