/* Dark Mode Styles - Shared across all pages */
:root {
    --bg-color: #f8f9fa;
    --card-bg: white;
    --card-bg-color: white;
    --text-color: #333;
    --text-secondary: #666;
    --secondary-text-color: #666;
    --border-color: #e9ecef;
    --navbar-bg: white;
    --shadow: rgba(0, 0, 0, 0.06);
    --shadow-hover: rgba(0, 0, 0, 0.12);
    --button-bg: #000000;
    --button-hover: #333333;
    --light-bg-color: #f9f9f9;
    --input-bg-color: white;
}

.light-mode {
    --bg-color: #f8f9fa;
    --card-bg: white;
    --card-bg-color: white;
    --text-color: #333;
    --text-secondary: #666;
    --secondary-text-color: #666;
    --border-color: #e9ecef;
    --navbar-bg: white;
    --shadow: rgba(0, 0, 0, 0.06);
    --shadow-hover: rgba(0, 0, 0, 0.12);
    --button-bg: #000000;
    --button-hover: #333333;
    --light-bg-color: #f9f9f9;
    --input-bg-color: white;
}

.dark-mode {
    --bg-color: #0f0f0f;
    --card-bg: #0f0f0f;
    --card-bg-color: #1a1a1a;
    --text-color: #ffffff;
    --text-secondary: #b0b0b0;
    --secondary-text-color: #b0b0b0;
    --border-color: #2a2a2a;
    --navbar-bg: #111111;
    --shadow: rgba(0, 0, 0, 0.5);
    --shadow-hover: rgba(0, 0, 0, 0.7);
    --button-bg: #1a1a1a;
    --button-hover: #222222;
    --light-bg-color: #1a1a1a;
    --input-bg-color: #2a2a2a;
}

/* Base body styling for dark mode */
body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Common navbar styles for dark mode */
.navbar {
    background-color: var(--navbar-bg);
    transition: background-color 0.3s ease;
}

.logo {
    color: var(--text-color);
    transition: color 0.3s ease;
}

/* Search box dark mode */
.search-box {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
    transition: all 0.3s ease;
}

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

.search-box:focus {
    border-color: #444444;
    box-shadow: 0 0 0 3px rgba(68, 68, 68, 0.2);
}

.dark-mode .search-box:focus {
    border-color: #555555;
    box-shadow: 0 0 0 3px rgba(85, 85, 85, 0.3);
}

/* Button styles for dark mode */
.icon-btn {
    color: var(--text-color);
    transition: all 0.3s ease;
}

.icon-btn:hover {
    background-color: var(--border-color);
}

.dark-mode .icon-btn:hover {
    background-color: #1a1a1a;
}

/* Card styles for dark mode */
.note-card, .card, .content-card {
    background: var(--card-bg);
    color: var(--text-color);
    transition: all 0.3s ease;
}

/* Card cover images - ensure they work in dark mode */
.card-cover-image {
    background-color: var(--border-color);
    transition: all 0.3s ease;
}

.card-cover-image:not(.loaded) {
    background: linear-gradient(45deg, var(--border-color) 25%, transparent 25%), 
                linear-gradient(-45deg, var(--border-color) 25%, transparent 25%), 
                linear-gradient(45deg, transparent 75%, var(--border-color) 75%), 
                linear-gradient(-45deg, transparent 75%, var(--border-color) 75%);
}

/* Form elements dark mode */
input, textarea, select {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
    transition: all 0.3s ease;
}

/* Button elements dark mode */
.btn, .upload-btn, .view-pdf-btn, .button {
    background-color: var(--button-bg);
    color: white;
    transition: all 0.3s ease;
}

.btn:hover, .upload-btn:hover, .view-pdf-btn:hover, .button:hover {
    background-color: var(--button-hover);
}

/* Dark mode specific button overrides */
.dark-mode .btn, .dark-mode .upload-btn, .dark-mode .view-pdf-btn {
    background-color: #1a1a1a;
    border: 1px solid #333333;
}

.dark-mode .btn:hover, .dark-mode .upload-btn:hover, .dark-mode .view-pdf-btn:hover {
    background-color: #222222;
    border-color: #444444;
}

/* Text elements */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-color);
}

p, span, div {
    color: var(--text-color);
}

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

/* Links */
a {
    color: var(--text-color);
    transition: color 0.3s ease;
}

/* Tables */
table {
    background-color: var(--card-bg);
    color: var(--text-color);
}

th, td {
    border-color: var(--border-color);
}

/* Modals and overlays */
.modal, .overlay {
    background-color: var(--card-bg);
    color: var(--text-color);
}

/* Scrollbars (webkit) */
::-webkit-scrollbar {
    width: 8px;
}

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

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

.dark-mode ::-webkit-scrollbar-thumb {
    background: #333333;
}

.dark-mode ::-webkit-scrollbar-thumb:hover {
    background: #444444;
}

/* System theme support - applies when no explicit theme class is set */
@media (prefers-color-scheme: dark) {
    body:not(.light-mode):not(.dark-mode) {
        --bg-color: #0f0f0f;
        --card-bg: #0f0f0f;
        --text-color: #ffffff;
        --text-secondary: #b0b0b0;
        --border-color: #2a2a2a;
        --navbar-bg: #111111;
        --shadow: rgba(0, 0, 0, 0.5);
        --shadow-hover: rgba(0, 0, 0, 0.7);
        --button-bg: #1a1a1a;
        --button-hover: #222222;
    }
    
    body:not(.light-mode):not(.dark-mode) ::-webkit-scrollbar-thumb {
        background: #333333;
    }

    body:not(.light-mode):not(.dark-mode) ::-webkit-scrollbar-thumb:hover {
        background: #444444;
    }
}