:root {
    --primary-color: #0f172a;
    --secondary-color: #b48c36; /* CPA Gold */
    --accent-color: #3b82f6;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-color: #334155;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --error-color: #ef4444;
    --success-color: #22c55e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4 {
    color: var(--primary-color);
    font-weight: 600;
}

/* Utilities */
.mb-4 { margin-bottom: 1.5rem; }
.p-0 { padding: 0 !important; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #1e293b;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--border-color);
}

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

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

/* Login Page */
.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e293b 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.logo-container {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    max-height: 60px;
    margin-bottom: 1rem;
}

.subtitle {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--primary-color);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.login-footer {
    text-align: center;
    margin-top: 2rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* Dashboard */
.navbar {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-logo {
    height: 32px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

/* Cards */
.card {
    background-color: var(--surface-color);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

.badge {
    background-color: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.bg-success { background-color: var(--success-color); }
.bg-danger { background-color: var(--error-color); }
.bg-primary { background-color: var(--accent-color); }
.bg-secondary { background-color: var(--text-muted); }

.card-body {
    padding: 1.5rem;
}

/* Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #f8fafc;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover {
    background-color: #f1f5f9;
}

.empty-state {
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
}

/* Terminal */
.terminal {
    background-color: #1e293b;
    color: #10b981;
    padding: 1rem;
    border-radius: 0.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    white-space: pre-wrap;
    line-height: 1.4;
}

/* Alerts and Toasts */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.alert-error {
    background-color: #fef2f2;
    color: var(--error-color);
    border: 1px solid #fecaca;
}

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 50;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

/* Drag & Drop File Upload */
.file-upload-wrapper {
    position: relative;
    width: 100%;
    height: 120px;
    border: 2px dashed var(--border-color);
    border-radius: 0.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #f8fafc;
    transition: all 0.2s ease;
    cursor: pointer;
    overflow: hidden;
}

.file-upload-wrapper:hover, .file-upload-wrapper:focus-within {
    border-color: var(--accent-color);
    background-color: #f0f9ff;
}

.file-upload-wrapper.dragover {
    border-color: var(--success-color);
    background-color: #dcfce7;
}

.file-upload-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 10;
}

.file-upload-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 8px;
    color: var(--text-muted);
}

.file-upload-text {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    text-align: center;
    padding: 0 10px;
    word-break: break-all;
}

.file-upload-wrapper.has-file .file-upload-icon {
    color: var(--success-color);
}
.file-upload-wrapper.has-file .file-upload-text {
    color: var(--primary-color);
    font-weight: 600;
}

/* Button Loading State */
.btn.loading {
    pointer-events: none;
    opacity: 0.8;
    position: relative;
    color: transparent !important;
}

.btn.loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 20px;
    height: 20px;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}