/**
 * Fuel Price Tracker - Frontend Stylesheet
 */

:root {
    --fpt-indigo: #6366f1;
    --fpt-indigo-hover: #4f46e5;
    --fpt-emerald: #10b981;
    --fpt-emerald-hover: #059669;
    --fpt-slate-50: #f8fafc;
    --fpt-slate-100: #f1f5f9;
    --fpt-slate-200: #e2e8f0;
    --fpt-slate-400: #94a3b8;
    --fpt-slate-600: #475569;
    --fpt-slate-800: #1e293b;
    --fpt-slate-900: #0f172a;
    --fpt-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fpt-chart-card {
    font-family: inherit;
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--fpt-slate-200);
    margin: 20px 0;
    transition: var(--fpt-transition);
    position: relative;
    overflow: hidden;
}

/* Theme: Dark (Premium Glassmorphism) */
.fpt-chart-card.fpt-theme-dark {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-color: rgba(255, 255, 255, 0.08);
    color: var(--fpt-slate-50);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.fpt-chart-card.fpt-theme-dark .fpt-chart-title {
    color: #ffffff;
}

.fpt-chart-card.fpt-theme-dark .fpt-chart-subtitle {
    color: var(--fpt-slate-400);
}

/* Theme: Light */
.fpt-chart-card.fpt-theme-light {
    background: #ffffff;
    border-color: var(--fpt-slate-200);
    color: var(--fpt-slate-900);
}

.fpt-chart-card.fpt-theme-light .fpt-chart-title {
    color: var(--fpt-slate-900);
}

.fpt-chart-card.fpt-theme-light .fpt-chart-subtitle {
    color: var(--fpt-slate-600);
}

/* Header styling */
.fpt-chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.fpt-chart-info {
    flex-grow: 1;
}

/* Toolbar row: theme toggle + import/export + filters */
.fpt-chart-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* Generic icon button */
.fpt-tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: 10px;
    border: 1px solid var(--fpt-slate-200);
    background: rgba(255,255,255,0.06);
    color: var(--fpt-slate-600);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--fpt-transition);
    line-height: 1;
}

.fpt-tool-btn:hover {
    background: var(--fpt-slate-100);
    color: var(--fpt-slate-900);
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

/* Dark theme tool buttons */
.fpt-theme-dark .fpt-tool-btn {
    border-color: rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    color: var(--fpt-slate-400);
}

.fpt-theme-dark .fpt-tool-btn:hover {
    background: rgba(255,255,255,0.12);
    color: #ffffff;
    box-shadow: 0 3px 12px rgba(0,0,0,0.3);
}



.fpt-chart-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 4px 0;
    letter-spacing: -0.02em;
}

.fpt-chart-subtitle {
    font-size: 0.875rem;
    margin: 0;
}

/* Filter buttons */
.fpt-chart-filters {
    display: flex;
    background: rgba(0, 0, 0, 0.05);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.02);
}

.fpt-theme-dark .fpt-chart-filters {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.05);
}

.fpt-filter-btn {
    border: none;
    background: transparent;
    padding: 6px 16px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--fpt-transition);
    color: var(--fpt-slate-600);
}

.fpt-theme-dark .fpt-filter-btn {
    color: var(--fpt-slate-400);
}

.fpt-filter-btn:hover {
    color: var(--fpt-slate-900);
}

.fpt-theme-dark .fpt-filter-btn:hover {
    color: #ffffff;
}

.fpt-filter-btn.active {
    background: #ffffff;
    color: var(--fpt-slate-900);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.fpt-theme-dark .fpt-filter-btn.active {
    background: var(--fpt-indigo);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

/* Chart Canvas body */
.fpt-chart-body {
    position: relative;
    margin-bottom: 20px;
}

.fpt-canvas-container {
    position: relative;
    height: 350px;
    width: 100%;
}

/* Loader Overlay */
.fpt-loader-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: opacity 0.3s ease;
    border-radius: 12px;
}

.fpt-theme-dark .fpt-loader-overlay {
    background: rgba(15, 23, 42, 0.85);
}

.fpt-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--fpt-slate-200);
    border-top: 4px solid var(--fpt-indigo);
    border-radius: 50%;
    animation: fpt-spin 1s linear infinite;
}

@keyframes fpt-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer layout */
.fpt-chart-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--fpt-slate-200);
    padding-top: 16px;
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 10px;
}

.fpt-theme-dark .fpt-chart-footer {
    border-top-color: rgba(255, 255, 255, 0.08);
}

/* Custom legend design */
.fpt-legend-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    flex: 1;
    min-width: 0;
}

.fpt-legend-pill {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--fpt-slate-600);
    cursor: pointer;
    user-select: none;
    transition: var(--fpt-transition);
}

.fpt-legend-pill:hover {
    transform: translateY(-1px);
    color: var(--fpt-slate-900);
}

.fpt-theme-dark .fpt-legend-pill {
    color: var(--fpt-slate-400);
}

.fpt-theme-dark .fpt-legend-pill:hover {
    color: #ffffff;
}

.fpt-legend-pill .fpt-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}

.fpt-pill-petrol .fpt-dot {
    background-color: var(--fpt-indigo);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.6);
}

.fpt-pill-diesel .fpt-dot {
    background-color: var(--fpt-emerald);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.fpt-status-message {
    color: var(--fpt-slate-400);
    font-style: italic;
}

/* Footer right area */
.fpt-footer-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

/* Country select dropdown */
.fpt-country-select-wrap {
    position: relative;
    flex-shrink: 0;
}

.fpt-country-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--fpt-slate-200);
    border-radius: 10px;
    padding: 7px 32px 7px 12px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--fpt-slate-600);
    cursor: pointer;
    transition: var(--fpt-transition);
    max-width: 200px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    font-family: inherit;
    line-height: 1.4;
}

.fpt-country-select:hover {
    border-color: var(--fpt-indigo);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.fpt-country-select:focus {
    outline: none;
    border-color: var(--fpt-indigo);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Dark theme country select */
.fpt-theme-dark .fpt-country-select {
    background-color: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.1);
    color: var(--fpt-slate-400);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

.fpt-theme-dark .fpt-country-select:hover {
    border-color: var(--fpt-indigo);
    background-color: rgba(255,255,255,0.1);
    color: #ffffff;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.fpt-theme-dark .fpt-country-select:focus {
    border-color: var(--fpt-indigo);
    color: #ffffff;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.fpt-theme-dark .fpt-country-select option {
    background: #1e293b;
    color: #f8fafc;
}

/* Light theme country select */
.fpt-theme-light .fpt-country-select {
    background-color: #ffffff;
    border-color: var(--fpt-slate-200);
    color: var(--fpt-slate-800);
}

.fpt-theme-light .fpt-country-select option {
    background: #ffffff;
    color: #1e293b;
}

/* Card grid layout */
.fpt-cards-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    margin-top: 20px;
}

.fpt-cards-grid .fpt-card {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--fpt-slate-200);
    padding: 24px;
    text-align: center;
    transition: var(--fpt-transition);
}

.fpt-cards-grid .fpt-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.fpt-cards-grid .fpt-card h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--fpt-slate-600);
    margin-top: 0;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.fpt-cards-grid .fpt-card .fpt-price-text {
    font-size: 2rem;
    font-weight: 700;
    color: var(--fpt-slate-900);
    margin: 0;
    background: linear-gradient(135deg, #1032da, #4f46e5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Card type accents */
.fpt-cards-grid .fpt-card-petrol {
    border-top: 4px solid var(--fpt-indigo);
}

.fpt-cards-grid .fpt-card-diesel {
    border-top: 4px solid var(--fpt-emerald);
}

.fpt-cards-grid .fpt-card-lpg {
    border-top: 4px solid #f59e0b;
}

.fpt-cards-grid .fpt-card-kerosene {
    border-top: 4px solid #ec4899;
}

/* ── Mobile Responsive Fixes ─────────────────────────────── */
@media (max-width: 600px) {

    /* Reduce card padding on mobile */
    .fpt-chart-card {
        padding: 16px;
        border-radius: 16px;
    }

    /* Stack header vertically */
    .fpt-chart-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        margin-bottom: 16px;
    }

    /* Smaller title on mobile */
    .fpt-chart-title {
        font-size: 1.1rem;
    }
    .fpt-chart-subtitle {
        font-size: 0.78rem;
    }

    /* Toolbar wraps neatly */
    .fpt-chart-toolbar {
        width: 100%;
        justify-content: flex-start;
    }

    /* Shorter canvas on mobile */
    .fpt-canvas-container {
        height: 220px;
    }

    /* Footer stacks: legend on top, country below */
    .fpt-chart-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding-top: 12px;
    }

    /* Legend pills: wrap, smaller text */
    .fpt-legend-pills {
        width: 100%;
        gap: 6px 10px;
    }

    .fpt-legend-pill {
        font-size: 0.75rem;
    }

    /* Diff badge smaller on mobile */
    .fpt-legend-pill span[style] {
        font-size: 0.72rem !important;
    }

    /* Country select full width on mobile */
    .fpt-footer-right {
        width: 100%;
        justify-content: space-between;
    }

    .fpt-country-select {
        max-width: 100%;
        width: 100%;
        font-size: 0.8rem;
    }

    /* Filter buttons: smaller padding */
    .fpt-filter-btn {
        padding: 5px 10px;
        font-size: 0.75rem;
    }
}