/* ===== GENERAL STYLES - Shared across all pages ===== */

/* CSS Custom Properties for Theme Support */
:root {
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f4f4f4;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --border-light: #e9ecef;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.15);

    /* Brand Colors */
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --primary-active: #004494;
    --success-color: #28a745;
    --success-hover: #218838;
    --success-bg: rgba(40, 167, 69, 0.1);
    --danger-color: #dc3545;
    --danger-hover: #c82333;
    --danger-bg: rgba(220, 53, 69, 0.1);
    --warning-color: #ffc107;
    --info-color: #17a2b8;

    /* Theme System */
    --accent-color: #007bff;
    --accent-hover-color: #0056b3;
    --accent-active-color: #004494;
    --white: #ffffff;
    --card-bg: #ffffff;
    --info-bg: #e8f4f8;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-accent: 0 4px 15px rgba(0, 123, 255, 0.3);
    --shadow-accent-hover: 0 6px 20px rgba(0, 123, 255, 0.4);

    /* Index Page Specific */
    --hero-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --hero-text: #ffffff;
    --particle-bg: rgba(255, 255, 255, 0.1);
    --features-bg: #f8f9fa;
    --icon-gradient: linear-gradient(135deg, #007bff, #0056b3);
    --glass-bg: rgba(255, 255, 255, 0.2);
    --glass-bg-hover: rgba(255, 255, 255, 0.3);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-border-hover: rgba(255, 255, 255, 0.5);
    --accent-color-alpha-90: rgba(0, 123, 255, 0.9);
    --accent-color-alpha-30: rgba(0, 123, 255, 0.3);
    --accent-color-alpha-25: rgba(0, 123, 255, 0.25);

    /* Navigation */
    --nav-bg: #007bff;
    --nav-text: #ffffff;
    --nav-hover: rgba(255, 255, 255, 0.1);

    /* Forms */
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --input-focus: #007bff;
    --input-placeholder: #6c757d;
}

/* Dark Theme Colors */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #121212;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #888888;
    --border-color: #404040;
    --border-light: #333333;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.5);

    /* Brand Colors for Dark Mode */
    --primary-color: #4dabf7;
    --primary-hover: #339af0;
    --primary-active: #228be6;
    --success-color: #51cf66;
    --success-hover: #40c057;
    --success-bg: rgba(81, 207, 102, 0.1);
    --danger-color: #ff6b6b;
    --danger-hover: #fa5252;
    --danger-bg: rgba(255, 107, 107, 0.1);
    --warning-color: #ffd43b;
    --info-color: #22b8cf;

    /* Theme System for Dark Mode */
    --accent-color: #4dabf7;
    --accent-hover-color: #339af0;
    --accent-active-color: #228be6;
    --white: #ffffff;
    --card-bg: #2d2d2d;
    --info-bg: #1a2332;

    /* Navigation for Dark Mode */
    --nav-bg: #2d2d2d;
    --nav-text: #e0e0e0;
    --nav-hover: rgba(255, 255, 255, 0.1);

    /* Forms for Dark Mode */
    --input-bg: #2d2d2d;
    --input-border: #404040;
    --input-focus: #4dabf7;
    --input-placeholder: #888888;

    /* Shadows for Dark Mode */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.6);
    --shadow-accent: 0 4px 15px rgba(77, 171, 247, 0.3);
    --shadow-accent-hover: 0 6px 20px rgba(77, 171, 247, 0.4);

    /* Index Page Dark Mode */
    --hero-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --hero-text: #e0e0e0;
    --particle-bg: rgba(255, 255, 255, 0.05);
    --features-bg: #2d2d2d;
    --icon-gradient: linear-gradient(135deg, #4dabf7, #339af0);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-hover: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-hover: rgba(255, 255, 255, 0.2);
    --accent-color-alpha-90: rgba(77, 171, 247, 0.9);
    --accent-color-alpha-30: rgba(77, 171, 247, 0.3);
    --accent-color-alpha-25: rgba(77, 171, 247, 0.25);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    transition: color 0.3s ease, background-color 0.3s ease;
}

body {
    background: var(--bg-tertiary);
    margin: 0;
    padding: 0;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    background: var(--primary-color);
    color: #fff;
    cursor: pointer;
    font-size: 16px;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
}

.btn:hover {
    background: var(--primary-hover);
    color: #fff;
}

.btn:active {
    background: var(--primary-active);
}

.btn-secondary {
    background: var(--text-muted);
}

.btn-secondary:hover {
    background: #5a6268;
}

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

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

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

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

.btn-warning {
    background: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background: #e0a800;
    color: #212529;
}

/* Form Elements */
input[type="text"],
input[type="password"],
input[type="email"],
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    font-size: 16px;
    font-family: inherit;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

input[type="text"]::placeholder,
input[type="password"]::placeholder,
input[type="email"]::placeholder,
textarea::placeholder {
    color: var(--input-placeholder);
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

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

.content-wrapper {
    padding-top: 56px;
    /* Space for fixed navigation */
    min-height: calc(100vh - 56px);
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mt-5 {
    margin-top: 3rem;
}

.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

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

.mb-4 {
    margin-bottom: 1.5rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.p-1 {
    padding: 0.25rem;
}

.p-2 {
    padding: 0.5rem;
}

.p-3 {
    padding: 1rem;
}

.p-4 {
    padding: 1.5rem;
}

.p-5 {
    padding: 3rem;
}

/* Card Component */
.card {
    background: var(--bg-primary);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 2px 8px var(--shadow-color);
    margin-bottom: 20px;
    border: 1px solid var(--border-light);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.card-header {
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.card-body {
    padding: 0;
}

/* Status Messages */
.status {
    padding: 12px 16px;
    border-radius: 4px;
    margin: 10px 0;
    font-size: 14px;
    display: none;
}

.status.success {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
    display: block;
}

.status.error {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    display: block;
}

.status.info {
    background: rgba(23, 162, 184, 0.1);
    border: 1px solid var(--info-color);
    color: var(--info-color);
    display: block;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .btn {
        width: 100%;
        margin-bottom: 10px;
    }

    .card {
        margin: 10px;
        padding: 16px;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }
}

/* Animation Utilities */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}