/* Reset & Base Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-success: #10b981;
    --accent-danger: #ef4444;
    --accent-warning: #f59e0b;
    --border-color: #334155;
    --border-hover: #475569;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    background-image:
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(16, 185, 129, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease-out;
}

.logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    position: relative;
    background: var(--bg-secondary);
    padding: 4px;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 12px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.025em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(12px);
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--border-hover);
}

.card-header {
    background: rgba(15, 23, 42, 0.3);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
}

.card-body {
    padding: 1.5rem;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

input[type="text"],
input[type="url"],
input[type="password"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.2s ease;
}

input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    background: var(--bg-tertiary);
}

input::placeholder {
    color: var(--text-muted);
}

/* Checkbox */
.checkbox-wrapper {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    cursor: pointer;
    padding: 1rem;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s ease;
    width: 100%;
}

.checkbox-label:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
}

.checkbox-label input {
    display: none;
}

.checkmark {
    width: 22px;
    height: 22px;
    border: 2px solid var(--text-muted);
    border-radius: 6px;
    position: relative;
    flex-shrink: 0;
    transition: all 0.2s ease;
    margin-top: 2px;
}

.checkbox-label input:checked + .checkmark {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.checkbox-label input:checked + .checkmark::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-text strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.checkbox-text small {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    gap: 0.5rem;
    width: 100%; /* Mobile first */
}

@media (min-width: 640px) {
    .btn {
        width: auto;
    }
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-text:hover {
    color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.1);
}

/* Steps */
.step {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.step.active {
    display: block;
}

/* Toolbar & Filters */
.toolbar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .toolbar {
        flex-direction: row;
        align-items: stretch;
    }
}

.filter-mode {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-secondary);
    padding: 0.25rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    flex: 1;
}

.filter-mode label {
    flex: 1;
    text-align: center;
    padding: 0.6rem;
    border-radius: 8px;
    cursor: pointer;
    margin: 0;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    font-size: 0.9rem;
    white-space: nowrap;
}

.filter-mode label:hover {
    background: rgba(255, 255, 255, 0.05);
}

.filter-mode input {
    display: none;
}

.filter-mode input:checked + span {
    color: var(--text-primary);
    font-weight: 600;
}

.filter-mode label:has(input:checked) {
    background: var(--bg-tertiary);
    box-shadow: var(--shadow-sm);
}

.search-box {
    position: relative;
    flex: 1.5;
}

.search-box input {
    padding-right: 2.5rem;
    height: 100%;
}

.search-icon {
    position: absolute;
    right: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.5;
    pointer-events: none;
}

/* Categories */
.category-chips {
    max-height: 500px;
    overflow-y: auto;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.3);
}

.category-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0.5rem;
    position: sticky;
    top: 0;
    background: var(--bg-card);
    z-index: 10;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px); /* Increased blur */
    -webkit-backdrop-filter: blur(12px);
    cursor: pointer;
    user-select: none;
    border-radius: 8px 8px 0 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1); /* Add shadow for separation */
}

.category-group-wrapper {
    position: relative;
    margin-bottom: 0.5rem;
}

.category-section-header h3 {
    font-size: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
}

.chevron {
    transition: transform 0.2s ease;
}

.category-section-header.collapsed .chevron {
    transform: rotate(-90deg);
}

.category-section-header.collapsed {
    border-bottom-color: transparent;
    border-radius: 8px;
}

.btn-section-select-all {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    margin-left: 1rem;
}

.btn-section-select-all:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.category-section {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.75rem;
    padding: 1rem 0.5rem;
}

.category-section.hidden {
    display: none;
}

.category-chip {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.8rem;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
}

.category-chip:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.category-chip.selected {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--accent-success);
    color: var(--accent-success);
    font-weight: 500;
}

.category-chip.hidden {
    display: none;
}

.selection-counter {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 1rem 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
    gap: 1rem;
    flex-wrap: wrap;
}

.selection-counter.has-selection {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: var(--accent-primary);
    font-weight: 500;
}

.selection-actions {
    display: flex;
    gap: 0.5rem;
}

/* Success State */
.success-state {
    text-align: center;
    padding: 3rem 1rem;
}

.success-checkmark {
    width: 80px;
    height: 80px;
    background: var(--accent-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin: 0 auto 1.5rem;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.success-title {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.success-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

@media (min-width: 640px) {
    .success-actions {
        flex-direction: row;
    }
}

.download-link {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideUp 0.3s ease-out;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: #fcd34d;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}

/* Loading */
.loading {
    display: none;
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    border-top-color: var(--accent-primary);
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

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

@keyframes popIn {
    0% { transform: scale(0); opacity: 0; }
    70% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 50;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.2s ease-out;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.modal-summary {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.summary-row:last-child {
    border-bottom: none;
}

.summary-label {
    color: var(--text-secondary);
}

.summary-value {
    color: var(--text-primary);
    font-weight: 600;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* API Builder Styles */
.api-url-container {
    margin-top: 1rem;
}

.url-display-box {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.url-display-box code {
    flex: 1;
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--accent-primary);
    overflow-x: auto;
    white-space: nowrap;
    padding-right: 2rem;
}

.btn-copy {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.btn-copy:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}