/* ========================================
   CUANTO ME QUEDA - Calculadora Sueldo Neto
   Mobile-first CSS
   ======================================== */

/* CSS Variables */
:root {
    --color-primary: #2ECC71;
    --color-primary-dark: #27AE60;
    --color-primary-light: #A9DFBF;
    --color-danger: #E74C3C;
    --color-danger-light: #FADBD8;
    --color-warning: #F39C12;
    --color-bg: #F8F9FA;
    --color-card: #FFFFFF;
    --color-text: #2C3E50;
    --color-text-light: #7F8C8D;
    --color-border: #ECF0F1;
    --color-input-bg: #F5F6F7;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

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

    --transition-speed: 0.2s;

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    min-height: 100dvh;
}

/* Container */
.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 16px;
    padding-bottom: 32px;
}

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

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

.header__subtitle {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Calculator */
.calculator {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px 20px;
}

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

.form__group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form__label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

.form__label--small {
    font-size: 0.75rem;
    font-weight: 500;
}

.form__input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form__currency {
    position: absolute;
    left: 16px;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-light);
    pointer-events: none;
}

.form__input {
    width: 100%;
    height: 56px;
    padding: 0 16px 0 40px;
    font-size: 1.25rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-input-bg);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-speed), background var(--transition-speed);
    -webkit-appearance: none;
    appearance: none;
}

.form__input:focus {
    border-color: var(--color-primary);
    background: var(--color-card);
}

.form__input::placeholder {
    color: var(--color-text-light);
    font-weight: 400;
}

.form__input--small {
    height: 44px;
    padding: 0 36px 0 12px;
    font-size: 1rem;
}

.form__input-wrapper--small {
    max-width: 100px;
}

.form__suffix {
    position: absolute;
    right: 12px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-light);
    pointer-events: none;
}

.form__error {
    font-size: 0.8125rem;
    color: var(--color-danger);
    padding-left: 4px;
}

/* Options Toggle */
.options-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary-dark);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.options-toggle__icon {
    font-size: 0.75rem;
    transition: transform var(--transition-speed);
}

.options-toggle.active .options-toggle__icon {
    transform: rotate(180deg);
}

/* Advanced Options */
.options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    background: var(--color-input-bg);
    border-radius: var(--radius-md);
    animation: slideDown 0.2s ease-out;
}

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

.options__item {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.options__sub {
    margin-left: 32px;
    padding-top: 4px;
}

/* Checkbox */
.checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.checkbox input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox__mark {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-card);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
    flex-shrink: 0;
}

.checkbox__mark::after {
    content: '';
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--transition-speed);
}

.checkbox input:checked + .checkbox__mark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox input:checked + .checkbox__mark::after {
    transform: rotate(45deg) scale(1);
}

.checkbox__label {
    font-size: 0.9375rem;
    color: var(--color-text);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 52px;
    padding: 14px 24px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn--primary {
    width: 100%;
    background: var(--color-primary);
    color: white;
}

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

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

.btn--secondary {
    flex: 1;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

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

.btn--outline {
    flex: 1;
    background: transparent;
    color: var(--color-text-light);
    border: 2px solid var(--color-border);
}

.btn--outline:hover {
    border-color: var(--color-text-light);
    color: var(--color-text);
}

.btn__icon {
    width: 18px;
    height: 18px;
}

/* Results */
.results {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.results__title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.results__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 0.9375rem;
}

.results__row--header {
    font-weight: 600;
}

.results__row--total {
    font-weight: 600;
}

.results__amount {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.results__amount--negative {
    color: var(--color-danger);
}

.results__divider {
    height: 1px;
    background: var(--color-border);
    margin: 8px 0;
}

.results__deducciones {
    display: flex;
    flex-direction: column;
}

.results__deduccion {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.results__deduccion-name {
    display: flex;
    align-items: center;
    gap: 6px;
}

.results__deduccion-percent {
    font-size: 0.75rem;
    color: var(--color-text-light);
    opacity: 0.7;
}

.results__deduccion-amount {
    color: var(--color-danger);
    font-variant-numeric: tabular-nums;
}

/* Neto Box */
.results__neto {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    margin: 16px 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    color: white;
    text-align: center;
}

.results__neto-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.9;
    margin-bottom: 4px;
}

.results__neto-amount {
    font-size: 2rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.results__neto-percent {
    font-size: 0.8125rem;
    opacity: 0.85;
    margin-top: 4px;
}

/* Actions */
.results__actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

/* Footer */
.footer {
    margin-top: 24px;
    padding: 16px;
    text-align: center;
}

.footer__text {
    font-size: 0.75rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.footer__disclaimer {
    font-size: 0.6875rem;
    color: var(--color-text-light);
    opacity: 0.7;
    margin-top: 8px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    background: var(--color-text);
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease-out;
    z-index: 1000;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.toast.hiding {
    animation: toastOut 0.2s ease-in forwards;
}

@keyframes toastOut {
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(16px);
    }
}

/* Responsive - Tablet+ */
@media (min-width: 768px) {
    .container {
        padding: 32px 24px;
    }

    .header {
        padding: 32px 0 24px;
    }

    .header__title {
        font-size: 2rem;
    }

    .calculator {
        padding: 32px;
    }

    .results__neto-amount {
        font-size: 2.5rem;
    }
}

/* Hide number input spinners */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

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

/* Focus visible for accessibility */
.btn:focus-visible,
.form__input:focus-visible,
.checkbox input:focus-visible + .checkbox__mark,
.options-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}