:root {
    --bg-color: #f8fafc; /* slate-50 */
    --text-color: #0f172a; /* slate-900 */
    --card-bg: #ffffff;
    --border-color: #e2e8f0; /* slate-200 */
}

.dark {
    --bg-color: #0f172a; /* slate-900 */
    --text-color: #f8fafc; /* slate-50 */
    --card-bg: #1e293b; /* slate-800 */
    --border-color: #334155; /* slate-700 */
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.input-field {
    background-color: var(--bg-color);
    color: var(--text-color);
    border-color: var(--border-color);
    border-radius: 0.5rem;
    padding: 0.625rem 0.75rem;
    outline: none;
    transition: all 0.2s ease;
}

.input-field:focus {
    border-color: #3b82f6; /* blue-500 */
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.dark .input-field {
    background-color: #252525;
    border-color: #334155;
}

.dark .input-field:focus {
    background-color: #282a2c;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Override inline Tailwind classes for dark mode inputs in expense */
.dark input[class*="dark:bg-slate"],
.dark textarea[class*="dark:bg-slate"] {
    background-color: #252525 !important;
}

.dark input[class*="dark:bg-slate"]:focus,
.dark textarea[class*="dark:bg-slate"]:focus {
    background-color: #282a2c !important;
}

/* Handle amount input with bg-transparent */
.dark input[class*="bg-transparent"] {
    background-color: #252525 !important;
}

.dark input[class*="bg-transparent"]:focus {
    background-color: #282a2c !important;
}

/* Spinner Loader */
.loader {
    border: 3px solid rgba(148, 163, 184, 0.2); /* slate-400 */
    border-top: 3px solid #3b82f6; /* blue-500 */
    border-radius: 50%;
    width: 36px;
    height: 36px;
    animation: spin 1s linear infinite;
}

.dark .loader {
    border: 3px solid rgba(71, 85, 105, 0.4); /* slate-600 */
    border-top: 3px solid #60a5fa; /* blue-400 */
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.drag-over {
    border-color: #3b82f6 !important;
    background-color: rgba(59, 130, 246, 0.05) !important;
}

.dark .drag-over {
    border-color: #60a5fa !important;
    background-color: rgba(96, 165, 250, 0.1) !important;
}

/* Scrollbar styling for a cleaner look */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.dark ::-webkit-scrollbar-thumb {
    background: #475569;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}