:root {
    --primary-color: #6366f1;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    --primary-hover: #4338ca;

    /* Light Theme */
    --bg-light: #fbfcfe;
    --card-light: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;

    /* Dark Theme - Refined Slate Palette */
    --bg-dark: #080b14;
    --card-dark: #121726;
    --text-dark-main: #f8fafc;
    --text-dark-muted: #cbd5e1;
    /* Lightened from #94a3b8 for better accessibility */
    --border-dark: #2c3549;
    /* Slightly lighter border for better separation */
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Language-specific Typography */
[lang="ar"] body {
    font-family: 'Vazirmatn', sans-serif;
}

body.dark-mode {
    background-color: var(--bg-dark);
    color: var(--text-dark-main);
}

/* Global Theme Overrides */
body.dark-mode .text-dark {
    color: var(--text-dark-main) !important;
}

body.dark-mode .text-muted {
    color: var(--text-dark-muted) !important;
}

body.dark-mode .bg-white,
body.dark-mode .bg-light {
    background-color: var(--card-dark) !important;
    color: var(--text-dark-main);
}

body.dark-mode .border {
    border-color: var(--border-dark) !important;
}

body.dark-mode .border-bottom {
    border-bottom-color: var(--border-dark) !important;
}

body.dark-mode .border-top {
    border-top-color: var(--border-dark) !important;
}

body.dark-mode .table {
    color: var(--text-dark-main);
    border-color: var(--border-dark);
    --bs-table-bg: transparent;
    --bs-table-hover-bg: rgba(255, 255, 255, 0.05);
    --bs-table-striped-bg: rgba(255, 255, 255, 0.03);
    --bs-table-border-color: var(--border-dark);
}

body.dark-mode .table tr,
body.dark-mode .table td,
body.dark-mode .table th {
    background-color: transparent !important;
    color: inherit;
    border-color: var(--border-dark) !important;
}


/* Typography Improvements */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Modern Global Components */
.card {
    background-color: var(--card-light);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
}

body.dark-mode .card {
    background-color: var(--card-dark);
    border-color: var(--border-dark);
}

/* Navbar Refresh */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

body.dark-mode .navbar {
    background: rgba(11, 15, 26, 0.85);
    border-bottom: 1px solid rgba(45, 54, 79, 0.5);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: var(--primary-color) !important;
    display: flex;
    align-items: center;
}

.navbar-brand img {
    height: 38px;
    width: auto;
    margin-right: 12px;
    filter: drop-shadow(0 2px 4px rgba(79, 70, 229, 0.1));
}

html[dir="rtl"] .navbar-brand img {
    margin-right: 0;
    margin-left: 12px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-main) !important;
    padding: 0.5rem 1rem !important;
    border-radius: 50px;
    transition: all 0.2s ease;
}

body.dark-mode .nav-link {
    color: var(--text-dark-main) !important;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color) !important;
}

body.dark-mode .nav-link:hover,
body.dark-mode .nav-link.active {
    background-color: rgba(99, 102, 241, 0.2);
    color: #a5b4fc !important;
}

/* Buttons & Components */
.btn-primary {
    background: var(--primary-gradient);
    border: none;
    padding: 0.7rem 1.6rem;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(79, 70, 229, 0.4);
    filter: brightness(1.1);
}

.theme-toggle-btn {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    transition: all 0.2s ease;
    color: var(--text-main);
    background: rgba(0, 0, 0, 0.03);
}

body.dark-mode .theme-toggle-btn {
    color: var(--text-dark-main);
    background: rgba(255, 255, 255, 0.05);
}

.theme-toggle-btn:hover {
    background: rgba(0, 0, 0, 0.08);
    transform: scale(1.05);
}

body.dark-mode .theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.card {
    border: 1px solid var(--border-color);
    border-radius: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    background-color: var(--card-light);
    transition: all 0.3s ease;
}

body.dark-mode .card {
    background-color: var(--card-dark);
    border-color: var(--border-dark);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

/* Badge Text Wrapping - Prevent Overflow */
.badge {
    max-width: 100%;
    word-break: break-word;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
}

.form-control {
    border-radius: 14px;
    padding: 0.8rem 1.2rem;
    border: 1.5px solid var(--border-color);
    background-color: #ffffff;
    color: var(--text-main);
    transition: all 0.2s ease;
}

body.dark-mode .form-control {
    background-color: #1a2033;
    border-color: var(--border-dark);
    color: white;
}

.form-control:focus {
    background-color: #fff;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    border-color: var(--primary-color);
}

body.dark-mode .form-control:focus {
    background-color: #1e253d;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

body.dark-mode .input-group-text {
    background-color: #1a2033;
    border-color: var(--border-dark);
    color: var(--text-dark-muted);
}

body.dark-mode .form-text {
    color: #cbd5e1 !important;
    /* Brighter slate for better contrast */
    opacity: 1 !important;
}

.text-gradient {
    background: var(--primary-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.dark-mode .form-control::placeholder {
    color: var(--text-dark-muted);
    opacity: 0.6;
}

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

    .btn {
        padding: 0.6rem 1.2rem;
    }
}

.history-item {
    border-left: 4px solid var(--primary-color);
}

/* Hero Section */
.hero-gradient {
    background: linear-gradient(135deg, #4f46e5 0%, #a855f7 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.lang-switch .dropdown-toggle::after {
    display: none;
}

.lang-item {
    font-size: 0.9rem;
    border-radius: 8px;
}

.dropdown-menu {
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0.5rem;
}

body.dark-mode .dropdown-menu {
    background-color: var(--card-dark);
    border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .dropdown-item {
    color: var(--text-dark-main) !important;
    background: transparent !important;
}

body.dark-mode .dropdown-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff !important;
}