/* Mobile-first styles for Alquiler vs Comprar */

/* CSS Variables */
:root {
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-compra: #10B981;
    --color-compra-light: #D1FAE5;
    --color-alquiler: #F59E0B;
    --color-alquiler-light: #FEF3C7;
    --color-bg: #F1F5F9;
    --color-card: #FFFFFF;
    --color-text: #1E293B;
    --color-text-muted: #64748B;
    --color-border: #E2E8F0;
    --color-error: #EF4444;
    --color-success: #22C55E;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --transition-speed: 0.2s;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Base */
html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    min-height: 100dvh;
}

/* Container */
.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 16px;
    padding-bottom: 32px;
}

/* Header */
.header {
    text-align: center;
    padding: 24px 0 16px;
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.subtitle {
    color: var(--color-text-muted);
    font-size: 1rem;
}

/* Form */
.form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-section {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-sm);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

.section-icon {
    font-size: 1.25rem;
}

/* Input Groups */
.input-group {
    margin-bottom: 16px;
}

.input-group:last-child {
    margin-bottom: 0;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 6px;
}

.input-wrapper {
    display: flex;
    align-items: center;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition-speed);
}

.input-wrapper:focus-within {
    border-color: var(--color-primary);
}

.input-prefix,
.input-suffix {
    padding: 12px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    background: var(--color-border);
    font-weight: 500;
}

.input-prefix {
    border-right: 1px solid var(--color-border);
}

.input-suffix {
    border-left: 1px solid var(--color-border);
}

.input-wrapper input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 12px;
    font-size: 1rem;
    color: var(--color-text);
    min-height: 48px;
    width: 100%;
}

.input-wrapper input:focus {
    outline: none;
}

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

.input-wrapper input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.input-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* Error state */
.input-group.error .input-wrapper {
    border-color: var(--color-error);
}

.input-group .error-message {
    color: var(--color-error);
    font-size: 0.75rem;
    margin-top: 4px;
    display: none;
}

.input-group.error .error-message {
    display: block;
}

/* Simulate Button */
.btn-simulate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 16px 24px;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    min-height: 56px;
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-speed), transform var(--transition-speed);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn-simulate:hover {
    background: var(--color-primary-dark);
}

.btn-simulate:active {
    transform: scale(0.98);
}

.btn-simulate:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-icon {
    font-size: 1.25rem;
}

/* Results Section */
.results {
    margin-top: 24px;
    animation: fadeIn 0.3s ease-out;
}

.results.hidden {
    display: none;
}

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

.results-title {
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 16px;
    color: var(--color-text);
}

/* Chart */
.chart-container {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 16px;
}

.chart-container canvas {
    max-height: 300px;
}

/* Summary Cards */
.summary-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}

.summary-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid;
}

.card-compra {
    border-left-color: var(--color-compra);
}

.card-alquiler {
    border-left-color: var(--color-alquiler);
}

.summary-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--color-border);
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item .label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.summary-item .value {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
}

.summary-item.highlight {
    background: var(--color-bg);
    margin: 8px -8px -8px;
    padding: 12px 8px;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    border-bottom: none;
}

.card-compra .summary-item.highlight .value {
    color: var(--color-compra);
}

.card-alquiler .summary-item.highlight .value {
    color: var(--color-alquiler);
}

/* Recommendation */
.recommendation {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-md);
    margin-bottom: 16px;
    border: 2px solid var(--color-border);
}

.recommendation.rec-compra {
    border-color: var(--color-compra);
    background: var(--color-compra-light);
}

.recommendation.rec-alquiler {
    border-color: var(--color-alquiler);
    background: var(--color-alquiler-light);
}

.recommendation-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.recommendation-text {
    flex: 1;
}

.rec-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.rec-result {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

/* Disclaimer */
.disclaimer {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
    padding: 12px;
    background: var(--color-card);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    line-height: 1.6;
}

/* Share Button */
.btn-share {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-primary);
    background: transparent;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    min-height: 48px;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn-share:hover {
    background: var(--color-primary);
    color: white;
}

.btn-share:active {
    transform: scale(0.98);
}

/* Footer */
.footer {
    text-align: center;
    padding: 24px 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.footer a {
    color: var(--color-primary);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Tablet and up */
@media (min-width: 768px) {
    .container {
        padding: 24px;
    }

    .header h1 {
        font-size: 2rem;
    }

    .form-section {
        padding: 20px;
    }

    .summary-cards {
        flex-direction: row;
    }

    .summary-card {
        flex: 1;
    }

    .chart-container canvas {
        max-height: 350px;
    }
}

/* Smooth scroll for results */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0F172A;
        --color-card: #1E293B;
        --color-text: #F1F5F9;
        --color-text-muted: #94A3B8;
        --color-border: #334155;
        --color-compra-light: #064E3B;
        --color-alquiler-light: #78350F;
    }

    .input-wrapper {
        background: var(--color-bg);
    }

    .input-prefix,
    .input-suffix {
        background: #334155;
    }

    .input-wrapper input {
        color: var(--color-text);
    }
}