:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --background-color: #000000;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --success-color: #50E3C2;
    --warning-color: #FFB800;
    --danger-color: #FF6B6B;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    padding: 2rem 1rem;
    line-height: 1.6;
}

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

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header h1 i {
    margin-right: 0.5rem;
}

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

/* Tabs */
.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--card-border);
    padding-bottom: 0.5rem;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.tab-btn:hover {
    color: var(--text-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-btn i {
    margin-right: 0.5rem;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Card */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.card-header {
    margin-bottom: 2rem;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.card-header h2 i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Form */
.form-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    color: var(--primary-color);
}

.input-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.cron-input {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    font-size: 1rem;
    font-family: 'Inter', monospace;
    transition: all 0.3s ease;
}

.cron-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
}

.command-input {
    font-family: 'Inter', monospace;
}

.cron-textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    font-size: 1rem;
    font-family: 'Inter', monospace;
    resize: vertical;
    transition: all 0.3s ease;
}

.cron-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
}

.help-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
}

/* Buttons */
.btn-quick-select,
.btn-generate,
.btn-parse,
.btn-apply {
    background: var(--gradient);
    border: none;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}

.btn-quick-select:hover,
.btn-generate:hover,
.btn-parse:hover,
.btn-apply:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.4);
}

.btn-quick-select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--card-border);
}

.btn-quick-select:hover {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: none;
}

.btn-generate,
.btn-parse {
    width: 100%;
    margin-top: 0.5rem;
}

/* Quick Select Panel */
.quick-select-panel {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 0.5rem;
}

.quick-select-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.quick-select-grid label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background 0.2s ease;
    font-weight: normal;
}

.quick-select-grid label:hover {
    background: rgba(255, 255, 255, 0.05);
}

.quick-select-grid input[type="checkbox"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

/* Output */
.output-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--card-border);
}

.output-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.output-header h3 i {
    margin-right: 0.5rem;
    color: var(--success-color);
}

.output-box {
    position: relative;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    overflow: hidden;
}

.cron-output {
    flex: 1;
    color: var(--success-color);
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    line-height: 1.6;
    white-space: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    min-width: 0;
}

.btn-copy {
    background: var(--gradient);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-copy:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.4);
}

.btn-copy.copied {
    background: var(--success-color);
}

/* Templates */
.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.template-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.template-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.template-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.template-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.template-complexity {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.complexity-low {
    background: rgba(80, 227, 194, 0.2);
    color: var(--success-color);
}

.complexity-medium {
    background: rgba(255, 184, 0, 0.2);
    color: var(--warning-color);
}

.complexity-high {
    background: rgba(255, 107, 107, 0.2);
    color: var(--danger-color);
}

.complexity-extreme {
    background: rgba(189, 0, 255, 0.2);
    color: #bd00ff;
}

.template-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.template-cron {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    padding: 0.75rem;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--success-color);
    word-break: break-all;
    margin-bottom: 1rem;
}

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

.template-btn {
    flex: 1;
    background: var(--gradient);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.template-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.4);
}

.template-btn.copied {
    background: var(--success-color);
}

/* Parse Output */
.parse-output {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--card-border);
}

.parse-result h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.parse-result h3 i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.explanation-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1.5rem;
}

.explanation-item {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--card-border);
}

.explanation-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.explanation-label {
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: block;
}

.explanation-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

.explanation-text strong {
    color: var(--text-color);
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 4rem;
    border-top: 1px solid var(--card-border);
    color: var(--text-secondary);
}

.app-footer p {
    margin-bottom: 0.5rem;
}

.app-footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.app-footer a:hover {
    color: var(--secondary-color);
}

.app-footer .bmc-logo {
    display: inline-block;
    margin-top: 1rem;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.app-footer .bmc-logo:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.app-footer .bmc-logo img {
    height: 60px;
    width: 217px;
}

.app-footer .view-all-apps-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1rem auto 0 auto;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    width: fit-content;
}

.app-footer .view-all-apps-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.4);
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .tabs {
        flex-wrap: wrap;
    }

    .tab-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .card {
        padding: 1.5rem;
    }

    .input-row {
        flex-direction: column;
    }

    .btn-quick-select {
        width: 100%;
    }

    .quick-select-grid {
        grid-template-columns: 1fr;
    }

    .templates-grid {
        grid-template-columns: 1fr;
    }

    .output-box {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-copy {
        width: 100%;
    }
}