:root {
    --primary: #1a2a6c;
    --secondary: #3a7bd5;
    --accent: #ff7e5f;
    --warning: #ff416c;
    --success: #2e7d32;
    --success-light: rgb(113, 243, 120);
    --light: #f8f9fa;
    --dark: #333;
    --gray: #e0e0e0;
    --text-light: #666;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Tema oscuro tipo Telegram */
.dark-theme {
    --primary: #222b36;
    --secondary: #2a3948;
    --accent: #ff7e5f;
    --warning: #ff416c;
    --success: #2e7d32;
    --success-light: rgb(113, 243, 120);
    --light: #232b36;
    --dark: #e6eaf0;
    --gray: #2f3b4a;
    --text-light: #b0b8c1;
    --card-shadow: 0 4px 24px rgba(0,0,0,0.7);
    background: linear-gradient(135deg, #232b36, #222b36 80%);
}

.dark-theme body {
    background: linear-gradient(135deg, #232b36, #222b36 80%) !important;
}

.dark-theme .container {
    background-color: #232b36;
    color: var(--text-light);
}

.dark-theme header {
    background: linear-gradient(to right, #263445, #2a3948);
    color: #e6eaf0;
}

.dark-theme .accordion {
    background: #232b36;
    border-color: #2f3b4a;
}

.dark-theme .accordion-header {
    background: #2a3948;
    color: #e6eaf0;
}

.dark-theme .result-container {
    background: linear-gradient(to right, #263445, #2a3948);
    color: #e6eaf0;
}

.dark-theme .stat-item,
.dark-theme .moto-info-grid {
    background: rgba(36, 46, 58, 0.5);
}

.dark-theme .input-group input {
    background: #263445;
    color: #e6eaf0;
    border-color: #2f3b4a;
}

.dark-theme .input-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(94, 190, 255, 0.2);
}

.dark-theme .btn {
    background: linear-gradient(to right, #5ebeff, #2a3948);
    color: #fff;
}

.dark-theme .btn-reset {
    background: #2a3948;
}

.dark-theme .btn-reset:hover {
    background: var(--warning);
}

.dark-theme .progress-container {
    background-color: #263445;
}

.dark-theme .progress-bar {
    background: linear-gradient(to right, var(--accent), #feb47b);
}

.dark-theme .fuel-alert {
    background: linear-gradient(to right, var(--warning), #ff4b2b);
    color: #fff;
}

.dark-theme .storage-indicator {
    background: #263445;
    color: var(--success);
}

.dark-theme footer {
    color: #b0b8c1;
    background: #232b36;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 0;
}

.container {
    background-color: rgba(255, 255, 255, 0.95);
    width: 100%;
    max-width: 100%;
    min-height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

header {
    background: var(--secondary);
    color: white;
    padding: 20px 15px;
    text-align: center;
    position: relative;
}

.header-content {
    max-width: 500px;
    margin: 0 auto;
}

.motorcycle-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header-content h1 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.theme-switch i {
    color: #fff;
    transition: color 0.2s;
}

main {
    flex-grow: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.input-group {
    margin-bottom: 15px;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--dark);
    font-size: 0.95rem;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    appearance: textfield;
    -moz-appearance: textfield;
}

.input-group input::-webkit-outer-spin-button,
.input-group input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.input-group input:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 2px rgba(255, 126, 95, 0.3);
}

.input-icon {
    position: absolute;
    right: 15px;
    top: 38px;
    color: #888;
    font-size: 1.1rem;
}

.error-message {
    color: var(--warning);
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
}

.btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(1px);
}

.btn-reset {
    margin-top: 15px;
}

.btn-reset:hover {
    background: var(--warning);
}

.result-container {
    background: var(--secondary);
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-top: 15px;
    display: none;
    flex-grow: 1;
}

.result-container.show {
    display: flex;
    flex-direction: column;
}

.result-header {
    text-align: center;
    margin-bottom: 15px;
}

.result-title {
    font-size: 1.3rem;
    font-weight: 600;
}

.moto-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 15px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 12px;
}

.info-item {
    text-align: center;
    padding: 8px;
}

.info-item h3 {
    font-size: 0.8rem;
    margin-bottom: 5px;
    opacity: 0.9;
}

.info-value {
    font-size: 1rem;
    font-weight: bold;
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 15px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
}

.stat-item h3 {
    font-size: 0.85rem;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: bold;
}

.km-remaining-card {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    margin-bottom: 15px;
}

.km-remaining-card h3 {
    font-size: 1rem;
    margin-bottom: 10px;
}

.km-remaining-value {
    font-size: 1.8rem;
    font-weight: 800;
}

.progress-container {
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    height: 18px;
    margin: 15px 0;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(to right, var(--accent), #feb47b);
    border-radius: 10px;
    width: 100%;
    transition: var(--transition);
}

.fuel-indicator {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
    font-weight: 600;
    font-size: 0.9rem;
}

.fuel-alert {
    background: linear-gradient(to right, var(--warning), #ff4b2b);
    padding: 8px;
    border-radius: 8px;
    margin-top: 12px;
    display: none;
    animation: pulse 1.5s infinite;
    text-align: center;
    font-size: 0.9rem;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.accordion {
    background: #f0f8ff;
    border-radius: 10px;
    margin-top: 15px;
    border: 1px solid #d1e7ff;
    overflow: hidden;
}

.accordion-header {
    padding: 12px 15px;
    background: var(--secondary);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
}

.accordion-header i {
    transition: var(--transition);
}

.accordion-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.accordion.open .accordion-content {
    max-height: 300px;
    padding: 12px;
}

.accordion.open .accordion-header i {
    transform: rotate(180deg);
}

.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.form-section {
    margin-top: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.section-title {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--gray);
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title i, .section-title span {
    color: var(--dark);
}

footer {
    text-align: center;
    padding: 15px;
    color: var(--text-light);
    font-size: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.storage-indicator {
    background: #e1f5e1;
    padding: 4px 8px;
    border-radius: 15px;
    font-size: 0.75rem;
    color: var(--success);
}

/* Media queries para pantallas más grandes */
@media (min-width: 768px) {
    body {
        padding: 20px;
        align-items: center;
    }
    
    .container {
        max-width: 500px;
        min-height: auto;
        border-radius: 15px;
        box-shadow: var(--card-shadow);
    }
    
    header {
        padding: 25px 20px;
        border-radius: 15px 15px 0 0;
    }
    
    .header-content h1 {
        font-size: 1.8rem;
    }
    
    .header-content p {
        font-size: 1rem;
    }
    
    .motorcycle-icon {
        font-size: 3rem;
    }
    
    main {
        padding: 25px;
    }
    
    .input-group {
        margin-bottom: 20px;
    }
    
    .input-group label {
        font-size: 1rem;
    }
    
    .input-group input {
        padding: 14px 15px;
        font-size: 1.1rem;
    }
    
    .input-icon {
        top: 42px;
        font-size: 1.2rem;
    }
    
    .btn {
        padding: 15px;
        font-size: 1.1rem;
    }
    
    .result-container {
        padding: 25px;
    }
    
    .result-title {
        font-size: 1.4rem;
    }
    
    .km-remaining-value {
        font-size: 2.2rem;
    }
    
    .moto-info-grid {
        gap: 10px;
        padding: 15px;
    }
    
    .info-item h3 {
        font-size: 0.9rem;
    }
    
    .info-value {
        font-size: 1.1rem;
    }
    
    .result-stats {
        gap: 10px;
        margin-bottom: 20px;
    }
    
    .stat-item {
        padding: 15px;
    }
    
    .stat-item h3 {
        font-size: 0.9rem;
    }
    
    .stat-value {
        font-size: 1.4rem;
    }
    
    .km-remaining-card {
        padding: 20px;
    }
    
    .progress-container {
        height: 20px;
        margin: 20px 0;
    }
    
    .fuel-indicator {
        margin-top: 15px;
    }
    
    .fuel-alert {
        padding: 10px;
    }
    
    .accordion-header {
        padding: 15px;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.1rem;
    }
    
    footer {
        padding: 20px;
        font-size: 0.9rem;
        border-radius: 0 0 15px 15px;
    }
}

@media (max-width: 480px) {
    main {
        padding: 8px 10px;
    }
    .input-group input {
        padding: 16px 12px;
        font-size: 1.15rem;
    }
    .input-group label {
        font-size: 1.05rem;
    }
    .btn, .btn-reset {
        font-size: 1.1rem;
        padding: 16px;
        border-radius: 10px;
    }
    .result-container {
        padding: 10px 8px;
    }
    .moto-info-grid {
        gap: 6px;
        padding: 8px 2px;
    }
    .stat-item, .info-item {
        padding: 8px 2px;
    }
    .km-remaining-card {
        padding: 10px 2px;
    }
    .progress-container {
        height: 16px;
        margin: 10px 0;
    }
    .section-title {
        font-size: 1rem;
        padding-bottom: 4px;
    }
}

/* Preferencia de esquema de color oscuro en el sistema */
/* @media (prefers-color-scheme: dark) {
    :root {
        --primary: #1a2a6c;
        --secondary: #3a7bd5;
        --accent: #ff7e5f;
        --warning: #ff416c;
        --success: #2e7d32;
        --light: #f8f9fa;
        --dark: #333;
        --gray: #e0e0e0;
        --text-light: #666;
        --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
} */