/* ==========================================
   BaseAI Theme CSS - Dark Mode with Gradients
   ========================================== */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Background */
    --bg-primary: #0a0e27;
    --bg-secondary: #12172e;
    --bg-tertiary: #1a1f3a;

    /* Colors - Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #b47eff 50%, #ff6b9d 100%);
    --gradient-button-primary: linear-gradient(90deg, #00d4ff, #b47eff);
    --gradient-button-danger: linear-gradient(90deg, #b47eff, #ff6b9d);
    --gradient-success: linear-gradient(90deg, #00ff88, #00d4ff);
    --gradient-error: linear-gradient(90deg, #ff6b9d, #ff4757);

    /* Colors - Cyan */
    --cyan-500: #00d4ff;
    --cyan-400: #33ddff;
    --cyan-600: #00a8cc;

    /* Colors - Purple */
    --purple-500: #b47eff;
    --purple-400: #c299ff;
    --purple-600: #9966cc;

    /* Colors - Pink */
    --pink-500: #ff6b9d;
    --pink-400: #ff88b1;
    --pink-600: #ff4d88;

    /* Colors - Text */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);

    /* Colors - Border */
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(255, 255, 255, 0.05);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--cyan-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--cyan-400);
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Card ===== */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-primary);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0.25rem 0 0 0;
}

.card-body {
    padding: var(--spacing-md);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-input:focus,
.form-select:focus {
    border-color: var(--cyan-500);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-input:disabled,
.form-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-help {
    display: block;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    outline: none;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-button-primary);
    border: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-danger {
    background: var(--gradient-button-danger);
    border: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover:not(:disabled) {
    box-shadow: var(--shadow-md), 0 0 20px rgba(255, 107, 157, 0.3);
}

.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
}

.btn-white {
    background: white;
    color: var(--bg-primary);
    border: none;
}

.btn-white:hover {
    background: rgba(255, 255, 255, 0.9);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-text {
    display: inline-block;
}

.btn-loader {
    display: none;
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-loader {
    display: inline-block;
}

/* ===== Spinner ===== */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-large {
    display: inline-block;
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--cyan-500);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== Checkbox ===== */
.checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--cyan-500);
}

/* ===== Table ===== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-sm);
}

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

th {
    padding: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: left;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-primary);
}

td {
    padding: 1rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-secondary);
}

tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.th-checkbox {
    width: 60px;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 500px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: modalFadeIn var(--transition-base);
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-md);
}

.modal-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.modal-features {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.modal-features li {
    padding: 0.5rem 0;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.modal-features.warning li {
    color: var(--pink-500);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-primary);
}

.modal-footer .btn {
    flex: 1;
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    min-width: 300px;
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    pointer-events: all;
    animation: toastSlideIn var(--transition-base);
}

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

.toast-success {
    background: var(--gradient-success);
    border: none;
}

.toast-error {
    background: var(--gradient-error);
    border: none;
}

.toast-message {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ===== Progress Bar ===== */
.progress-bar-container {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-bar {
    height: 100%;
    background: var(--gradient-button-primary);
    border-radius: var(--radius-sm);
    transition: width var(--transition-base);
    width: 0%;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
    }

    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
    }

    .toast {
        min-width: 0;
    }
}