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

/* CSS Variables for Theme */
:root {
    --primary-bg: #0f0f23;
    --secondary-bg: #1a1a2e;
    --card-bg: #16213e;
    --accent: #0f4c75;
    --accent-hover: #3282b8;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --border: #27272a;
    --success: #22c55e;
    --warning: #eab308;
    --error: #ef4444;
    --input-bg: #18181b;
    --input-border: #3f3f46;
    --input-focus: #3282b8;
    --shadow: rgba(0, 0, 0, 0.3);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
    padding: 1rem;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    width: 100%;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.75rem;
    flex-shrink: 0;
}

header h1 {
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--accent-hover);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.download-btn {
    background: var(--accent);
    border: 1px solid var(--accent-hover);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: background 0.2s ease;
}

.download-btn:hover {
    background: var(--accent-hover);
}

.lang-btn {
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s ease;
}

.lang-btn:hover {
    background: var(--accent);
    border-color: var(--accent-hover);
}

/* Main 2-column layout */
main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1rem;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Card */
.card {
    background: var(--card-bg);
    /* border-radius: 1rem; */
    border-radius: 0.3rem;
    /* padding: 1.5rem; */
    padding: 1.0rem 1.5rem 1.0rem 1.5rem;
    box-shadow: 0 4px 6px var(--shadow);
    border: 1px solid var(--border);
    overflow-y: auto;
    min-height: 0;
}

.card h2 {
    font-size: 1.5rem;
    /* margin-bottom: 1.5rem; */
    margin-bottom: 1rem;
    color: var(--accent-hover);
    font-weight: 600;
}

/* Input Group */
.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    gap: 0.5rem;
}

.input-group label.checkbox-label {
    justify-content: left;
}

.input-group .unit {
    background: var(--accent);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.input-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(50, 130, 184, 0.1);
}

.input-group input:invalid {
    border-color: var(--error);
}

/* Output Table */
.output-table {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    /* overflow-x: auto; // no overflow x to avoid horizontal scroller */
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 2fr;
    gap: 1rem;
    padding: 0.5rem;
    background: var(--input-bg);
    /* border-radius: 0.5rem; */
    border-radius: 0.15rem;
    align-items: center;
    transition: all 0.3s ease;
}

.table-row:hover:not(.header) {
    background: var(--secondary-bg);
    transform: translateX(4px);
}

.table-row.header {
    background: var(--accent);
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.cell {
    padding: 0.25rem;
    word-wrap: break-word;
}

.cell.resource {
    font-weight: 500;
}

.cell.value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--success);
    text-align: center;
}

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

.cell.notes {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

.or-row {
    border-left: 3px solid var(--warning);
}

.or-label {
    display: inline-block;
    background: var(--warning);
    color: var(--primary-bg);
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    font-weight: 700;
    font-size: 0.75rem;
    margin-right: 0.5rem;
}

/* Note */
.note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--secondary-bg);
    border-left: 4px solid var(--accent-hover);
    /* border-radius: 0.5rem; */
    font-size: 0.9rem;
    line-height: 1.6;
}

.note strong {
    color: var(--accent-hover);
}

/* Footer */
footer {
    text-align: center;
    padding: 0.75rem 0 0.25rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* Local VMS Checkbox */
.checkbox-group {
    margin-bottom: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    user-select: none;
    padding: 0.35rem 0;
}

.checkbox-label input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--accent-hover);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-label:hover {
    color: var(--text-primary);
}

/* Sub-group (indented field shown when Local VMS is checked) */
.sub-group {
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 2px solid var(--accent-hover);
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    main {
        grid-template-columns: 1fr 1.5fr;
    }

    .table-row {
        grid-template-columns: 1.5fr 0.8fr 1fr 1.5fr;
        gap: 0.75rem;
        padding: 0.875rem;
    }

    .cell.value {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    body {
        overflow: auto;
        height: auto;
    }

    main {
        grid-template-columns: 1fr;
        overflow: visible;
    }

    .card {
        overflow-y: visible;
        padding: 1.25rem;
    }

    .table-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: 1rem;
    }

    .table-row.header {
        display: none;
    }

    .cell {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .cell.value {
        font-size: 1.5rem;
        justify-content: center;
    }

    .cell.notes {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0.5rem;
    }

    .card {
        padding: 1rem;
        border-radius: 0.75rem;
    }

    .input-group input {
        padding: 0.75rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.5s ease-out;
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .lang-btn {
        display: none;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }
}