/**
 * Fuel Price Tracker - Fuel Calculator Stylesheet
 */

:root {
    --fpt-calc-border-radius: 20px;
    --fpt-calc-input-radius: 10px;
    --fpt-calc-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    --fpt-calc-shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.3);
    --fpt-calc-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fpt-calculator-container {
    width: 100%;
    margin: 20px 0;
    font-family: inherit;
    box-sizing: border-box;
}

.fpt-calculator-container * {
    box-sizing: border-box;
}

/* Base Card Style - Dark Background */
.fpt-calculator-card {
    background: #0d2e3d;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--fpt-calc-border-radius);
    padding: 28px;
    box-shadow: var(--fpt-calc-shadow);
    transition: var(--fpt-calc-transition);
    color: #ffffff;
}

.fpt-calculator-card:hover {
    box-shadow: var(--fpt-calc-shadow-hover);
}

/* Header Section */
.fpt-calculator-header {
    margin-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 16px;
}

.fpt-calculator-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 6px 0;
    background: linear-gradient(135deg, #00FF99, #2ECC71);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
    display: inline-block;
}

.fpt-calculator-subtitle {
    font-size: 0.875rem;
    margin: 0;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.4;
}

/* Form Layout */
.fpt-calculator-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.fpt-calculator-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.fpt-calculator-options-row {
    align-items: center;
}

.fpt-calculator-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.fpt-calculator-field label {
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
}

/* Input Styles - 60% Width for number, 40% Width for unit */
.fpt-calculator-input-group {
    display: flex;
    position: relative;
    width: 100%;
    border-radius: var(--fpt-calc-input-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    transition: var(--fpt-calc-transition);
}

.fpt-calculator-input-group:focus-within {
    border-color: #00FF99;
    box-shadow: 0 0 0 3px rgba(0, 255, 153, 0.15);
    background: rgba(255, 255, 255, 0.08);
}

.fpt-calculator-input-number-wrap {
    width: 60%;
}

.fpt-calculator-input-unit-wrap {
    width: 40%;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.fpt-calculator-input-group input[type="number"] {
    width: 100%;
    border: none;
    background: transparent;
    padding: 12px 14px;
    font-size: 0.95rem;
    color: #ffffff;
    font-family: inherit;
    font-weight: 500;
}

.fpt-calculator-input-group input[type="number"]:focus {
    outline: none;
}

.fpt-calculator-input-group select {
    width: 100%;
    border: none;
    background: transparent;
    padding: 0 16px;
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    font-family: inherit;
    border-radius: 0 var(--fpt-calc-input-radius) var(--fpt-calc-input-radius) 0;
    height: 100%;
}

.fpt-calculator-input-group select:focus {
    outline: none;
}

/* Option dropdown styling for dark theme select */
.fpt-calculator-field select option,
.fpt-calculator-input-group select option {
    background: #0d2e3d;
    color: #ffffff;
}

/* General Select Fields */
.fpt-calculator-field select {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--fpt-calc-input-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: var(--fpt-calc-transition);
}

.fpt-calculator-field select:focus {
    outline: none;
    border-color: #00FF99;
    box-shadow: 0 0 0 3px rgba(0, 255, 153, 0.15);
    background: rgba(255, 255, 255, 0.08);
}

/* Plain Number Inputs (e.g. Passengers) */
.fpt-calculator-field input[type="number"] {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--fpt-calc-input-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 500;
    transition: var(--fpt-calc-transition);
}

.fpt-calculator-field input[type="number"]:focus {
    outline: none;
    border-color: #00FF99;
    box-shadow: 0 0 0 3px rgba(0, 255, 153, 0.15);
    background: rgba(255, 255, 255, 0.08);
}

/* Custom Toggle Switch for Round Trip */
.fpt-checkbox-field {
    justify-content: flex-end;
    padding-bottom: 4px;
}

.fpt-calculator-toggle-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.fpt-calculator-toggle-label input[type="checkbox"] {
    display: none;
}

.fpt-toggle-switch {
    width: 44px;
    height: 24px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 999px;
    position: relative;
    transition: var(--fpt-calc-transition);
}

.fpt-toggle-switch::after {
    content: '';
    width: 18px;
    height: 18px;
    background: #ffffff;
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: var(--fpt-calc-transition);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.fpt-calculator-toggle-label input[type="checkbox"]:checked + .fpt-toggle-switch {
    background: #00FF99;
}

.fpt-calculator-toggle-label input[type="checkbox"]:checked + .fpt-toggle-switch::after {
    left: 23px;
}

.fpt-toggle-text {
    font-size: 0.9rem !important;
    font-weight: 600 !important;
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Error States */
.fpt-input-error {
    border-color: #ef4444 !important;
}

.fpt-calc-error {
    font-size: 0.75rem;
    color: #ef4444;
    font-weight: 600;
    display: none;
    margin-top: -2px;
}

/* Price Info Box */
.fpt-calculator-price-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-radius: var(--fpt-calc-input-radius);
    background: rgba(0, 255, 153, 0.03);
    border: 1px solid rgba(0, 255, 153, 0.15);
    margin: 8px 0;
}

.fpt-price-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #00FF99;
}

.fpt-price-value {
    font-size: 1.15rem;
    font-weight: 700;
    color: #00FF99;
}

.fpt-calc-currency {
    font-size: 0.85rem;
    font-weight: 600;
    margin-right: 2px;
}

.fpt-calc-per-l {
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.8;
}

.fpt-calc-price-unavailable {
    font-size: 0.8rem !important;
    color: #ef4444 !important;
    font-weight: 600 !important;
}

/* Submit Button - Gradient with #00FF99, #2ECC71, #ffffff text */
.fpt-calculator-actions {
    margin-top: 8px;
}

.fpt-calculator-btn-submit {
    width: 100%;
    padding: 14px 20px;
    border-radius: var(--fpt-calc-input-radius);
    border: none;
    background: linear-gradient(135deg, #00FF99, #2ECC71);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--fpt-calc-transition);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.2);
    text-shadow: 0 1px 2px rgba(13, 46, 61, 0.5);
}

.fpt-calculator-btn-submit:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(46, 204, 113, 0.4);
    opacity: 0.95;
}

.fpt-calculator-btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.fpt-calculator-btn-submit:disabled {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.3);
    cursor: not-allowed;
    box-shadow: none;
}

/* Results Section */
.fpt-calculator-results {
    margin-top: 28px;
    border-top: 2px dashed rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    animation: fptFadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fptFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fpt-calculator-results-divider {
    text-align: center;
    margin-bottom: 20px;
    position: relative;
}

.fpt-calculator-results-divider::after {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1;
}

.fpt-calculator-results-divider span {
    background: #0d2e3d;
    padding: 0 12px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.5);
    position: relative;
    z-index: 2;
}

/* cost prominent card */
.fpt-calculator-cost-card {
    background: rgba(0, 255, 153, 0.04);
    border: 1px solid rgba(0, 255, 153, 0.2);
    border-radius: var(--fpt-calc-input-radius);
    padding: 20px;
    text-align: center;
    margin-bottom: 24px;
}

.fpt-cost-card-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: #00FF99;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

.fpt-cost-card-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
}

/* Results Grid layout */
.fpt-calculator-results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.fpt-result-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 14px 16px;
    border-radius: 12px;
}

.fpt-result-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}

.fpt-result-value {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
}

/* Passenger result middle aligned */
.fpt-passenger-result {
    grid-column: span 2;
    background: rgba(0, 255, 153, 0.02);
    border-color: rgba(0, 255, 153, 0.1);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Footer Action buttons */
.fpt-calculator-footer-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.fpt-calc-btn-action {
    padding: 11px 16px;
    border-radius: var(--fpt-calc-input-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--fpt-calc-transition);
    font-family: inherit;
    text-align: center;
}

.fpt-calc-btn-action:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.2);
}

#fptResetBtn {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

#fptResetBtn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ffffff;
    border-color: rgba(239, 68, 68, 0.3);
}

.fpt-calc-share-feedback {
    font-size: 0.8rem;
    color: #00FF99;
    font-weight: 600;
    text-align: center;
    margin-top: 10px;
    display: none;
    transition: opacity 0.3s;
}

/* ==========================================================================
   Responsive Rules
   ========================================================================== */
@media (max-width: 768px) {
    .fpt-calculator-card {
        padding: 20px;
    }
    
    .fpt-calculator-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .fpt-checkbox-field {
        justify-content: flex-start;
        padding-top: 8px;
    }

    .fpt-calculator-results-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .fpt-passenger-result {
        grid-column: span 1;
    }

    .fpt-calculator-footer-actions {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .fpt-cost-card-value {
        font-size: 1.8rem;
    }
}