/* SPS Energy Calculator Styles */

/* Light/Dark Theme Variables */
:root {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --card-bg: #2a2f3e;
    --header-bg: #1a1f2e;
    --input-bg: #1a1f2e;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --border-color: #374151;
    --hover-bg: #374151;
    --accent-color: #3b82f6;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="light"] {
    --bg-primary: #f3f4f6;
    --bg-secondary: #ffffff;
    --card-bg: #ffffff;
    --header-bg: #ffffff;
    --input-bg: #f9fafb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --hover-bg: #f3f4f6;
    --accent-color: #3b82f6;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body[data-theme="light"] .energy-card,
body[data-theme="light"] .stat-card,
body[data-theme="light"] .tab-nav {
    border-color: var(--border-color);
    box-shadow: 0 1px 3px var(--shadow-color);
}

body[data-theme="light"] .energy-table th {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

body[data-theme="light"] .energy-table td {
    border-color: var(--border-color);
}

body[data-theme="light"] .preset-btn {
    border-color: var(--border-color);
}

body[data-theme="light"] .modal-content {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

/* Theme Toggle Button */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.theme-toggle:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
    border-color: var(--accent-color);
}

.theme-toggle .moon-icon {
    display: none;
}

body[data-theme="light"] .theme-toggle .sun-icon {
    display: none;
}

body[data-theme="light"] .theme-toggle .moon-icon {
    display: block;
}

/* Nav Right */
.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Energy Main */
.energy-main {
    background: var(--bg-primary);
    min-height: calc(100vh - 70px);
    padding: 2rem 0;
}

.energy-main .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Page Header */
.page-header {
    margin-bottom: 1.5rem;
}

.page-title {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-subtitle {
    margin: 0.25rem 0 0 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding: 0.5rem;
    background: var(--card-bg, #2a2f3e);
    border-radius: 12px;
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary, #9ca3af);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-primary, #fff);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    background: var(--accent-color, #3b82f6);
    color: white;
}

.tab-icon {
    font-size: 1.1rem;
}

/* Tab Panels */
.tab-panel {
    display: none;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg, #2a2f3e);
    border-radius: 12px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.yellow { background: rgba(234, 179, 8, 0.2); }
.stat-icon.blue { background: rgba(59, 130, 246, 0.2); }
.stat-icon.green { background: rgba(34, 197, 94, 0.2); }
.stat-icon.orange { background: rgba(249, 115, 22, 0.2); }
.stat-icon.red { background: rgba(239, 68, 68, 0.2); }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary, #fff);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary, #9ca3af);
    margin-top: 0.25rem;
}

/* Energy Cards */
.energy-card {
    background: var(--card-bg, #2a2f3e);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--header-bg, #1a1f2e);
    border-bottom: 1px solid var(--border-color, #374151);
}

.card-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-primary, #fff);
}

.card-body {
    padding: 1.5rem;
}

/* Energy Table */
.energy-table {
    width: 100%;
    border-collapse: collapse;
}

.energy-table th {
    background: rgba(0, 0, 0, 0.2);
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary, #9ca3af);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.energy-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.95rem;
    color: var(--text-primary, #fff);
}

.energy-table tbody tr:hover {
    background: rgba(59, 130, 246, 0.1);
}

.energy-table .total-row {
    background: rgba(59, 130, 246, 0.1);
}

.energy-table .total-row td {
    border-top: 2px solid var(--accent-color, #3b82f6);
}

.energy-table input {
    width: 80px;
    padding: 0.5rem;
    background: var(--input-bg, #1a1f2e);
    border: 1px solid var(--border-color, #374151);
    border-radius: 6px;
    color: var(--text-primary, #fff);
    font-size: 0.9rem;
    text-align: center;
}

.energy-table input:focus {
    outline: none;
    border-color: var(--accent-color, #3b82f6);
}

.empty-row {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary, #9ca3af);
}

/* Sizing Grid */
.sizing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.sizing-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sizing-item label {
    font-size: 0.85rem;
    color: var(--text-secondary, #9ca3af);
}

.sizing-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary, #fff);
}

.sizing-value.highlight {
    color: var(--accent-color, #3b82f6);
}

.sizing-item small {
    font-size: 0.75rem;
    color: var(--text-secondary, #9ca3af);
}

/* Input Field */
.input-field {
    padding: 0.75rem 1rem;
    background: var(--input-bg, #1a1f2e);
    border: 1px solid var(--border-color, #374151);
    border-radius: 8px;
    color: var(--text-primary, #fff);
    font-size: 0.95rem;
    width: 100%;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-color, #3b82f6);
}

/* Runtime Results */
.runtime-result {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.runtime-box {
    text-align: center;
    padding: 1rem;
}

.runtime-label {
    font-size: 0.85rem;
    color: var(--text-secondary, #9ca3af);
    margin-bottom: 0.5rem;
}

.runtime-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary, #fff);
}

.runtime-value.highlight {
    color: #22c55e;
}

.runtime-box small {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary, #9ca3af);
    margin-top: 0.5rem;
}

/* Presets Grid */
.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
}

.preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--input-bg, #1a1f2e);
    border: 1px solid var(--border-color, #374151);
    border-radius: 12px;
    color: var(--text-primary, #fff);
    cursor: pointer;
    transition: all 0.2s;
}

.preset-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-color, #3b82f6);
    transform: translateY(-2px);
}

.preset-icon {
    font-size: 1.5rem;
}

.preset-name {
    font-size: 0.85rem;
    font-weight: 500;
}

.preset-watts {
    font-size: 0.75rem;
    color: var(--text-secondary, #9ca3af);
}

/* Equipment Grid */
.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.equipment-card {
    background: var(--input-bg, #1a1f2e);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color, #374151);
}

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

.equipment-type {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-color, #3b82f6);
    font-weight: 600;
}

.equipment-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary, #fff);
    margin-top: 0.25rem;
}

.equipment-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.spec-item {
    display: flex;
    flex-direction: column;
}

.spec-label {
    font-size: 0.75rem;
    color: var(--text-secondary, #9ca3af);
}

.spec-value {
    font-weight: 600;
    color: var(--text-primary, #fff);
}

.equipment-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary, #9ca3af);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.5;
}

/* Solar Calculator */
.solar-calculator {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

.solar-input-group label {
    font-size: 0.85rem;
    color: var(--text-secondary, #9ca3af);
}

.solar-input-group small {
    font-size: 0.75rem;
    color: var(--text-secondary, #9ca3af);
}

/* Solar Results */
.solar-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.solar-result-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
}

.solar-result-item.highlight {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--accent-color, #3b82f6);
}

.result-label {
    font-size: 0.85rem;
    color: var(--text-secondary, #9ca3af);
}

.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary, #fff);
}

/* Tips List */
.tips-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tip-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.tip-item.warning {
    background: rgba(234, 179, 8, 0.1);
    border-left: 3px solid #eab308;
}

.tip-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tip-content strong {
    display: block;
    color: var(--text-primary, #fff);
    margin-bottom: 0.25rem;
}

.tip-content p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary, #9ca3af);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: var(--card-bg, #2a2f3e);
    color: var(--text-primary, #fff);
    border: 1px solid var(--border-color, #374151);
}

.btn-secondary:hover {
    background: var(--hover-bg, #374151);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary, #fff);
    border: 1px solid var(--border-color, #374151);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-color, #3b82f6);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.3);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    cursor: pointer;
}

.modal-content {
    position: relative;
    background: var(--card-bg, #2a2f3e);
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: var(--header-bg, #1a1f2e);
    border-bottom: 1px solid var(--border-color, #374151);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--text-primary, #fff);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary, #9ca3af);
    font-size: 1.75rem;
    cursor: pointer;
    border-radius: 8px;
    line-height: 1;
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--header-bg, #1a1f2e);
    border-top: 1px solid var(--border-color, #374151);
}

/* Form Styles */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary, #9ca3af);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    background: var(--input-bg, #1a1f2e);
    border: 1px solid var(--border-color, #374151);
    border-radius: 8px;
    color: var(--text-primary, #fff);
    font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color, #3b82f6);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding-top: 1.5rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-color, #3b82f6);
}

/* Header Title */
.header-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary, #fff);
}

/* Responsive */
@media (max-width: 768px) {
    .tab-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        flex-shrink: 0;
    }

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

    .sizing-grid,
    .solar-calculator {
        grid-template-columns: 1fr;
    }

    .runtime-result {
        grid-template-columns: 1fr;
    }

    .presets-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .energy-table {
        font-size: 0.85rem;
    }

    .energy-table th,
    .energy-table td {
        padding: 0.5rem;
    }
}

/* Fuel Breakdown */
.fuel-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.fuel-type-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color, #3b82f6);
}

.fuel-type-name {
    font-weight: 600;
    color: var(--text-primary, #fff);
    text-transform: capitalize;
}

.fuel-type-amount {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-color, #3b82f6);
}

.empty-text {
    color: var(--text-secondary, #9ca3af);
    font-style: italic;
    text-align: center;
    padding: 1rem;
}

body[data-theme="light"] .fuel-type-row {
    background: rgba(0, 0, 0, 0.05);
}

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

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