/* ============================================
   THEME SYSTEM - LIGHT & DARK MODE
   Brand Colors (from Moahil Logo):
   - #205b5f Dark Teal (Primary Dark)
   - #209aa2 Teal (Primary)
   - #86b7ba Light Teal (Light)
   - #e78a56 Orange (Accent)
   - #de9369 Warm Orange (Accent Light)
   - #FFF1E3 Cream (Lightest)
   ============================================ */

/* Bootstrap Color Overrides - Must be at root level */
:root {
    /* Override Bootstrap's primary color */
    --bs-primary: #209aa2;
    --bs-primary-rgb: 32, 154, 162;
    --bs-link-color: #209aa2;
    --bs-link-hover-color: #205b5f;
    
    /* Override Bootstrap's success color */
    --bs-success: #86b7ba;
    --bs-success-rgb: 134, 183, 186;
    
    /* Override Bootstrap's info color */
    --bs-info: #205b5f;
    --bs-info-rgb: 31, 90, 94;
}

/* Light Theme (Default) */
:root,
[data-theme="light"] {
    /* Primary Colors - Moahil Brand Palette */
    --purple-primary: #209aa2;
    --purple-dark: #205b5f;
    --purple-light: #86b7ba;
    --purple-lightest: #FFF1E3;
    --purple-gradient: linear-gradient(135deg, #209aa2 0%, #205b5f 100%);
    
    /* Brand Accent Colors (Orange) */
    --brand-orange: #e78a56;
    --brand-orange-warm: #de9369;
    --brand-orange-gradient: linear-gradient(135deg, #e78a56 0%, #de9369 100%);
    
    /* Additional Brand Colors */
    --brand-teal: #209aa2;
    --brand-teal-dark: #205b5f;
    --brand-cream: #FFF1E3;
    
    /* Backgrounds */
    --bg-body: #f8fafb;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f9f9;
    --bg-input: #ffffff;
    --bg-header: linear-gradient(135deg, #209aa2 0%, #205b5f 100%);
    --bg-navbar: linear-gradient(135deg, #209aa2 0%, #205b5f 100%);
    --bg-dropdown: #ffffff;
    --bg-modal: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-code: #f0f5f5;
    --bg-hover: rgba(32, 154, 162, 0.05);
    --bg-active: rgba(32, 154, 162, 0.1);
    
    /* Text Colors */
    --text-primary: #1a2e35;
    --text-secondary: #5a7a7e;
    --text-muted: #8da8ab;
    --text-inverse: #ffffff;
    --text-link: #209aa2;
    --text-link-hover: #205b5f;
    
    /* Borders */
    --border-color: #dce8e9;
    --border-light: #eef4f4;
    --border-focus: #209aa2;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-purple: 0 4px 14px rgba(32, 154, 162, 0.35);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08);
    
    /* Status Colors */
    --success: #209aa2;
    --success-bg: rgba(32, 154, 162, 0.12);
    --danger: #EF4444;
    --danger-bg: #fee2e2;
    --warning: #e78a56;
    --warning-bg: rgba(231, 138, 86, 0.12);
    --info: #86b7ba;
    --info-bg: rgba(134, 183, 186, 0.15);
    
    /* Form Elements */
    --input-bg: #ffffff;
    --input-border: #c8d8da;
    --input-focus-border: #209aa2;
    --input-placeholder: #9cb5b8;
    
    /* Misc */
    --overlay: rgba(31, 90, 94, 0.5);
    --scrollbar-track: #eef4f4;
    --scrollbar-thumb: #c8d8da;
    --scrollbar-thumb-hover: #8da8ab;
    
    /* Typography - Enhanced Readability */
    --font-family-base: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-xs: 0.8125rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --line-height-base: 1.65;
    --line-height-heading: 1.3;
    --line-height-tight: 1.4;
    --letter-spacing-tight: -0.01em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.02em;
}

/* Dark Theme */
[data-theme="dark"] {
    /* Primary Colors - adjusted for dark mode */
    --purple-primary: #86b7ba;
    --purple-dark: #209aa2;
    --purple-light: #86b7ba;
    --purple-lightest: #0e2a2c;
    --purple-gradient: linear-gradient(135deg, #209aa2 0%, #205b5f 100%);
    
    /* Brand Accent Colors (Orange) */
    --brand-orange: #e78a56;
    --brand-orange-warm: #de9369;
    --brand-orange-gradient: linear-gradient(135deg, #e78a56 0%, #de9369 100%);
    
    /* Additional Brand Colors */
    --brand-teal: #86b7ba;
    --brand-teal-dark: #209aa2;
    --brand-cream: #FFF1E3;
    
    /* Backgrounds */
    --bg-body: #0f2224;
    --bg-card: #152e31;
    --bg-card-hover: #1a3a3d;
    --bg-input: #1a3a3d;
    --bg-header: linear-gradient(135deg, #209aa2 0%, #205b5f 100%);
    --bg-navbar: linear-gradient(135deg, #209aa2 0%, #205b5f 100%);
    --bg-dropdown: #152e31;
    --bg-modal: #152e31;
    --bg-sidebar: #152e31;
    --bg-code: #1a3a3d;
    --bg-hover: rgba(134, 183, 186, 0.1);
    --bg-active: rgba(134, 183, 186, 0.2);
    
    /* Text Colors */
    --text-primary: #e8f0f1;
    --text-secondary: #9cb5b8;
    --text-muted: #6d8d90;
    --text-inverse: #0f2224;
    --text-link: #86b7ba;
    --text-link-hover: #a8d0d3;
    
    /* Borders */
    --border-color: #1e4446;
    --border-light: #152e31;
    --border-focus: #86b7ba;
    
    /* Shadows - deeper for dark mode */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    --shadow-purple: 0 4px 14px rgba(134, 183, 186, 0.4);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.4);
    
    /* Status Colors - slightly brighter for dark mode */
    --success: #86b7ba;
    --success-bg: rgba(134, 183, 186, 0.15);
    --danger: #F87171;
    --danger-bg: rgba(248, 113, 113, 0.15);
    --warning: #e78a56;
    --warning-bg: rgba(231, 138, 86, 0.15);
    --info: #86b7ba;
    --info-bg: rgba(134, 183, 186, 0.15);
    
    /* Form Elements */
    --input-bg: #1a3a3d;
    --input-border: #25504e;
    --input-focus-border: #86b7ba;
    --input-placeholder: #5a7a7e;
    
    /* Misc */
    --overlay: rgba(12, 31, 33, 0.7);
    --scrollbar-track: #152e31;
    --scrollbar-thumb: #25504e;
    --scrollbar-thumb-hover: #357068;
    
    /* Overrides for specific Bootstrap/existing classes */
    --white: #152e31;
}

/* ============================================
   THEME TOGGLE BUTTON
   ============================================ */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.05);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle .theme-icon {
    font-size: 1.25rem;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Sun icon (shown in dark mode) */
.theme-toggle .icon-sun {
    position: absolute;
    opacity: 0;
    transform: rotate(-90deg) scale(0);
}

/* Moon icon (shown in light mode) */
.theme-toggle .icon-moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

/* Dark mode icon states */
[data-theme="dark"] .theme-toggle .icon-sun {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="dark"] .theme-toggle .icon-moon {
    opacity: 0;
    transform: rotate(90deg) scale(0);
}

/* ============================================
   GLOBAL DARK MODE OVERRIDES
   ============================================ */

/* Body Background */
body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Cards and Containers */
.card,
.modal-content,
.dropdown-menu,
.popover,
.tooltip-inner {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Form Controls */
.form-control,
.form-select {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-primary);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--input-bg);
    border-color: var(--input-focus-border);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(32, 154, 162, 0.15);
}

.form-control::placeholder {
    color: var(--input-placeholder);
}

/* Tables */
.table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.table > :not(caption) > * > * {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.table-hover > tbody > tr:hover > * {
    background-color: var(--bg-hover);
}

/* Alerts */
.alert {
    border-color: var(--border-color);
}

/* Links */
a {
    color: var(--text-link);
}

a:hover {
    color: var(--text-link-hover);
}

/* Text utilities */
.text-muted {
    color: var(--text-muted) !important;
}

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

/* Border utilities */
.border {
    border-color: var(--border-color) !important;
}

.border-top,
.border-bottom,
.border-start,
.border-end {
    border-color: var(--border-color) !important;
}

/* Footer */
.footer {
    background-color: var(--bg-card);
    border-color: var(--border-color) !important;
    color: var(--text-secondary);
}

/* Dropdowns */
.dropdown-menu {
    background-color: var(--bg-dropdown);
    border-color: var(--border-color);
}

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

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.dropdown-divider {
    border-color: var(--border-color);
}

/* Modals */
.modal-header,
.modal-footer {
    border-color: var(--border-color);
}

/* List groups */
.list-group-item {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Badges */
.badge {
    color: var(--text-inverse);
}

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

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* ============================================
   SMOOTH TRANSITIONS
   ============================================ */
.card,
.form-control,
.form-select,
.btn,
.dropdown-menu,
.modal-content,
.nav-link,
.list-group-item,
.table,
.alert,
.badge,
input,
select,
textarea {
    transition: background-color 0.3s ease, 
                border-color 0.3s ease, 
                color 0.3s ease,
                box-shadow 0.3s ease;
}

/* ============================================
   PAGE-SPECIFIC DARK MODE OVERRIDES
   ============================================ */

/* Dashboard Cards */
[data-theme="dark"] .stat-card,
[data-theme="dark"] .quick-action-card,
[data-theme="dark"] .recommendation-card,
[data-theme="dark"] .activity-card {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .stat-card:hover,
[data-theme="dark"] .quick-action-card:hover,
[data-theme="dark"] .recommendation-card:hover {
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-lg);
}

/* Saved Items, Profile, Courses, Jobs pages */
[data-theme="dark"] .saved-content,
[data-theme="dark"] .profile-main,
[data-theme="dark"] .profile-sidebar,
[data-theme="dark"] .course-card,
[data-theme="dark"] .job-card,
[data-theme="dark"] .filter-card,
[data-theme="dark"] .search-container {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .saved-item,
[data-theme="dark"] .form-section {
    background: var(--bg-card-hover);
}

[data-theme="dark"] .saved-item:hover {
    background: var(--bg-card);
}

/* Section headers and tabs */
[data-theme="dark"] .section-header,
[data-theme="dark"] .saved-tabs {
    background: var(--bg-card-hover);
}

[data-theme="dark"] .saved-tab.active {
    background: var(--bg-card);
}

/* Stats cards background */
[data-theme="dark"] .saved-stats .stat-card {
    background: var(--bg-card);
}

/* Empty states */
[data-theme="dark"] .empty-icon {
    background: var(--bg-card-hover);
}

/* Modals */
[data-theme="dark"] .confirm-modal {
    background: var(--bg-modal);
}

/* Pagination */
[data-theme="dark"] .pagination .page-link {
    background: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .pagination .page-link:hover {
    background: var(--bg-hover);
}

/* Input groups */
[data-theme="dark"] .input-group-text {
    background: var(--bg-card-hover);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

/* Nav pills/tabs */
[data-theme="dark"] .nav-pills .nav-link,
[data-theme="dark"] .nav-tabs .nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .nav-pills .nav-link.active,
[data-theme="dark"] .nav-tabs .nav-link.active {
    background: var(--purple-primary);
    color: white;
}

/* Modern Dropdown in both themes */
.dropdown-menu-modern {
    background: #ffffff !important;
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-menu-modern {
    background: #152e31 !important;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .dropdown-menu-modern::before {
    background: #152e31 !important;
    border-top: 1px solid var(--border-color);
    border-left: 1px solid var(--border-color);
}

[data-theme="dark"] .dropdown-menu-modern .dropdown-header {
    color: var(--text-muted);
}

[data-theme="dark"] .dropdown-menu-modern .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-menu-modern .dropdown-item:hover {
    background: rgba(32, 154, 162, 0.15);
    color: var(--purple-light);
}

[data-theme="dark"] .dropdown-menu-modern .dropdown-item.active {
    background: rgba(32, 154, 162, 0.2);
    color: var(--purple-light);
}

/* ============================================
   GLOBAL TYPOGRAPHY - ENHANCED READABILITY
   ============================================ */

/* Base Typography */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    letter-spacing: var(--letter-spacing-normal);
}

/* Headings - Improved hierarchy and spacing */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    line-height: var(--line-height-heading);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--text-primary);
    margin-bottom: 0.75em;
}

h1, .h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
}

h2, .h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
}

h3, .h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 600;
}

h4, .h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

h5, .h5 {
    font-size: 1.1rem;
    font-weight: 600;
}

h6, .h6 {
    font-size: 1rem;
    font-weight: 600;
}

/* Paragraphs - Better readability */
p {
    margin-bottom: 1.25em;
    line-height: var(--line-height-base);
}

/* Lead text for introductions */
.lead {
    font-size: 1.15rem;
    line-height: 1.7;
    font-weight: 400;
    color: var(--text-secondary);
}

/* Small text - Ensure minimum readability */
small, .small, .text-sm {
    font-size: var(--font-size-sm) !important;
    line-height: 1.5;
}

.text-xs {
    font-size: var(--font-size-xs) !important;
    line-height: 1.5;
}

/* Links - Clear indication */
a {
    color: var(--text-link);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--text-link-hover);
    text-decoration: underline;
}

/* Lists - Better spacing */
ul, ol {
    margin-bottom: 1.25em;
    padding-left: 1.5em;
}

li {
    margin-bottom: 0.5em;
    line-height: var(--line-height-base);
}

/* Better text contrast for muted text */
.text-muted {
    color: var(--text-secondary) !important;
}

/* Card text improvements */
.card-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.card-text {
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-secondary);
}

/* Form labels - Clear and readable */
label, .form-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: block;
}

/* Input text */
input, textarea, select, .form-control {
    font-size: var(--font-size-base);
    line-height: 1.5;
}

/* Table text improvements */
table {
    font-size: var(--font-size-sm);
}

th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: var(--letter-spacing-wide);
}

td {
    line-height: 1.5;
}

/* Badge text */
.badge {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    padding: 0.4em 0.75em;
}

/* Button text */
.btn {
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* Better focus states for accessibility */
:focus-visible {
    outline: 2px solid var(--purple-primary);
    outline-offset: 2px;
}

/* Selection styling */
::selection {
    background: rgba(32, 154, 162, 0.2);
    color: var(--text-primary);
}

/* ============================================
   PREFERS COLOR SCHEME (System Default)
   Note: Theme is handled via JavaScript in theme.js
   which detects system preference and sets data-theme
   ============================================ */

/* ============================================
   BOOTSTRAP COMPONENT OVERRIDES
   Override Bootstrap's default colors for buttons,
   badges, and other components to use brand colors.
   ============================================ */

/* Primary Button Override */
.btn-primary {
    --bs-btn-bg: #209aa2;
    --bs-btn-border-color: #209aa2;
    --bs-btn-hover-bg: #205b5f;
    --bs-btn-hover-border-color: #205b5f;
    --bs-btn-active-bg: #205b5f;
    --bs-btn-active-border-color: #205b5f;
    --bs-btn-disabled-bg: #209aa2;
    --bs-btn-disabled-border-color: #209aa2;
    background: linear-gradient(135deg, #209aa2 0%, #205b5f 100%);
    border-color: transparent;
}

/* Success Button Override */
.btn-success {
    --bs-btn-bg: #86b7ba;
    --bs-btn-border-color: #86b7ba;
    --bs-btn-hover-bg: #209aa2;
    --bs-btn-hover-border-color: #209aa2;
    --bs-btn-active-bg: #209aa2;
    --bs-btn-active-border-color: #209aa2;
    --bs-btn-disabled-bg: #86b7ba;
    --bs-btn-disabled-border-color: #86b7ba;
}

/* Outline Primary Button Override */
.btn-outline-primary {
    --bs-btn-color: #209aa2;
    --bs-btn-border-color: #209aa2;
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: #209aa2;
    --bs-btn-hover-border-color: #209aa2;
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: #205b5f;
    --bs-btn-active-border-color: #205b5f;
}

/* Outline Success Button Override */
.btn-outline-success {
    --bs-btn-color: #86b7ba;
    --bs-btn-border-color: #86b7ba;
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: #86b7ba;
    --bs-btn-hover-border-color: #86b7ba;
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: #209aa2;
    --bs-btn-active-border-color: #209aa2;
}

/* Warning Button Override - Brand Orange */
.btn-warning {
    --bs-btn-bg: #e78a56;
    --bs-btn-border-color: #e78a56;
    --bs-btn-hover-bg: #d47840;
    --bs-btn-hover-border-color: #d47840;
    --bs-btn-color: #fff;
    --bs-btn-hover-color: #fff;
}

/* Primary Badge Override */
.badge.bg-primary,
.bg-primary {
    background-color: #209aa2 !important;
}

/* Success Badge Override */
.badge.bg-success,
.bg-success {
    background-color: #86b7ba !important;
}

/* Info Badge Override */
.badge.bg-info,
.bg-info {
    background-color: #205b5f !important;
}

/* Warning Badge Override */
.badge.bg-warning {
    background-color: #e78a56 !important;
    color: #fff !important;
}

/* Text Color Overrides */
.text-primary {
    color: #209aa2 !important;
}

.text-success {
    color: #86b7ba !important;
}

.text-info {
    color: #205b5f !important;
}

/* Border Color Overrides */
.border-primary {
    border-color: #209aa2 !important;
}

.border-success {
    border-color: #86b7ba !important;
}

/* Spinner Colors */
.spinner-border.text-primary {
    color: #209aa2 !important;
}

.spinner-border.text-success {
    color: #86b7ba !important;
}