/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base */
html, body {
    height: 100%;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-body);
    background: var(--color-canvas);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

/* =========================================
   Layout
   ========================================= */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-surface-soft);
    border-right: 1px solid var(--color-hairline);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    border-bottom: 1px solid var(--color-hairline);
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.sidebar-logo-img {
    width: 120px;
    height: auto;
    object-fit: contain;
}

.sidebar-subtitle {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-top: var(--space-xxs);
    padding-left: var(--space-xs);
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-sm) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-xxs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast), background var(--transition-fast);
    text-decoration: none;
}

.nav-item:hover {
    color: var(--color-text);
    background: var(--color-surface-card);
}

.nav-item.active {
    color: var(--color-primary);
    background: var(--color-surface-card);
}

.nav-item .badge {
    margin-left: auto;
}

.sidebar-footer {
    border-top: 1px solid var(--color-hairline);
    padding: var(--space-sm) 0;
}

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: var(--topbar-height);
    padding: 0 var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-hairline);
    background: var(--color-canvas);
    position: sticky;
    top: 0;
    z-index: 50;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--space-xxs);
}

.page-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    letter-spacing: var(--letter-spacing-tight);
}

.content {
    flex: 1;
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* =========================================
   Cards
   ========================================= */

.card {
    background: var(--color-surface-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-hairline);
}

.card-disabled {
    opacity: 0.5;
}

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

.card-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

/* =========================================
   Stats
   ========================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
}

.stat-card {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.stat-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-xs);
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    letter-spacing: var(--letter-spacing-tight);
}

.stat-active { color: var(--color-success); }
.stat-expired { color: var(--color-warning); }
.stat-revoked { color: var(--color-error); }

/* =========================================
   Tables
   ========================================= */

.table-wrap {
    overflow-x: auto;
}

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

.data-table th {
    padding: var(--space-sm) var(--space-lg);
    text-align: left;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--color-hairline);
    white-space: nowrap;
}

.data-table td {
    padding: var(--space-sm) var(--space-lg);
    border-bottom: 1px solid var(--color-hairline);
    font-size: var(--font-size-base);
    color: var(--color-text-body);
    white-space: nowrap;
}

.data-table tbody tr:hover {
    background: var(--color-surface-elevated);
}

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

.table-empty {
    text-align: center;
    color: var(--color-text-soft);
    padding: var(--space-2xl) var(--space-lg) !important;
}

/* =========================================
   Buttons
   ========================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: var(--color-surface-elevated);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: var(--color-hairline-strong);
}

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

.btn-danger:hover {
    opacity: 0.85;
}

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

.btn-success:hover {
    opacity: 0.85;
}

.btn-outline-success {
    background: transparent;
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.btn-outline-success:hover {
    background: rgba(34, 197, 94, 0.1);
}

.btn-outline-danger {
    background: transparent;
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

.btn-outline-danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.btn-outline-secondary {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-hairline-strong);
}

.btn-outline-secondary:hover {
    color: var(--color-text);
    background: var(--color-surface-elevated);
}

.btn-outline-warning {
    background: transparent;
    color: var(--color-warning);
    border: 1px solid var(--color-warning);
}

.btn-outline-warning:hover {
    background: rgba(245, 158, 11, 0.1);
}

.btn-outline-primary {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-outline-primary:hover {
    background: rgba(250, 255, 105, 0.1);
}

.btn-icon {
    padding: var(--space-xs);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
}

.btn-full {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: var(--space-xs);
}

/* =========================================
   Forms
   ========================================= */

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-strong);
    margin-bottom: var(--space-xs);
}

.form-input {
    width: 100%;
    height: var(--input-height);
    padding: 10px 14px;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-hairline-strong);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

textarea.form-input {
    height: auto;
    resize: vertical;
}

.form-hint {
    display: block;
    margin-top: var(--space-xxs);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* =========================================
   Badges
   ========================================= */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--space-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-pill);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-active {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.badge-inactive {
    background: rgba(136, 136, 136, 0.15);
    color: var(--color-text-muted);
}

.badge-expired {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.badge-revoked {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.badge-muted {
    background: var(--color-surface-elevated);
    color: var(--color-text-soft);
    font-size: 10px;
}

/* =========================================
   Key display
   ========================================= */

.btn-copy {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-hairline-strong);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    margin-right: var(--space-xs);
    vertical-align: middle;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

.key-code {
    font-family: var(--font-mono);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: 2px;
    background: var(--color-surface-elevated);
    padding: var(--space-xxs) var(--space-xs);
    border-radius: var(--radius-sm);
}

/* =========================================
   Alerts
   ========================================= */

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
}

.alert strong {
    display: block;
    margin-bottom: var(--space-xxs);
    color: var(--color-text);
}

.alert p {
    color: var(--color-text-body);
    margin: 0;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    color: var(--color-warning);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: var(--color-error);
    text-align: center;
    justify-content: center;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.25);
    color: var(--color-success);
}

/* =========================================
   Modal
   ========================================= */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 200;
}

.modal-overlay.active {
    display: block;
}

.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 201;
    width: 90%;
    max-width: 480px;
}

.modal.active {
    display: block;
}

.modal-dialog {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.modal-header {
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-hairline);
}

.modal-header h3 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: var(--font-size-xl);
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-text);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-xs);
    border-top: 1px solid var(--color-hairline);
}

/* =========================================
   Prospect detail
   ========================================= */

.prospect-details {
    padding: var(--space-lg);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xxs);
}

.detail-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.detail-value {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

/* =========================================
   Login page
   ========================================= */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-lg);
}

.login-container {
    width: 100%;
    max-width: 380px;
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.login-form {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.login-form .alert {
    margin-bottom: var(--space-md);
}

.login-form .btn {
    margin-top: var(--space-xs);
}

/* =========================================
   Toast notifications
   ========================================= */

.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.toast {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    animation: toast-in 200ms ease, toast-out 200ms ease 2.8s forwards;
}

.toast-success {
    background: var(--color-success);
    color: var(--color-on-primary);
}

.toast-error {
    background: var(--color-error);
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toast-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* =========================================
   Responsive
   ========================================= */

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    body.sidebar-open .modal-overlay {
        display: block;
        z-index: 99;
    }

    .sidebar-toggle {
        display: block;
    }

    .main-content {
        margin-left: 0;
    }

    .content {
        padding: var(--space-md);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .prospect-details {
        grid-template-columns: 1fr;
    }

    .data-table th,
    .data-table td {
        padding: var(--space-xs) var(--space-sm);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}