/* ==========================================================================
   1. Design Tokens (Variáveis Globais)
   ========================================================================== */
:root {
    /* Cores */
    --c-background: #FFFFFF;
    --c-text-dark: #2D3748;
    --c-text-medium: #718096;
    --c-border: #E2E8F0;
    --c-primary: #002198;
    --c-primary-disabled: #A0AEC0;
    --c-icon-action: #002198;
    --c-error: #E53E3E;
    --c-success: #38A169;
    --c-white: #FFFFFF;
    --c-shadow: rgba(0, 0, 0, 0.05);

    /* Tipografia */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --fs-sm: 0.75rem; /* 12px */
    --fs-base: 1rem;   /* 16px */
    --fw-normal: 400;
    --fw-medium: 500;
    --fw-bold: 700;
    
    /* Espaçamento */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    
    /* Outros */
    --border-radius: 10px;
    --transition-speed: 0.2s;
}

/* ==========================================================================
   2. Reset e Estilos Base
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--c-background);
    font-family: var(--font-family);
    color: var(--c-text-dark);
    font-weight: var(--fw-normal);
}

/* ==========================================================================
   3. Layout Principal
   ========================================================================== */
.app-container {
    width: 100%;
    max-width: 500px;
    min-height: 100vh;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.app-header {
    padding: var(--spacing-4) 0 0;
}

.main-content {
    flex-grow: 1;
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.app-footer {
    padding: 0 var(--spacing-6) var(--spacing-6);
    margin-top: auto;
}

/* ==========================================================================
   4. Componentes
   ========================================================================== */

/* Logo */
.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60px;
    margin-bottom: var(--spacing-4);
}
.logo-container img {
    max-height: 100%;
    max-width: 150px;
    object-fit: contain;
}

/* Abas (Tabs) */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--c-border);
}
.tabs__button {
    flex: 1;
    padding: var(--spacing-4);
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--fs-base);
    font-weight: var(--fw-medium);
    color: var(--c-text-medium);
    border-bottom: 2px solid transparent;
    transition: color var(--transition-speed), border-color var(--transition-speed);
}
.tabs__button--active {
    color: var(--c-primary);
    border-bottom-color: var(--c-primary);
}

/* Formulário (Form) */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}
.form__group {
    position: relative;
}
.form__label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--c-text-medium);
}
.form__input-wrapper {
    position: relative;
}
.form__input {
    width: 100%;
    padding: var(--spacing-4);
    border: 1px solid var(--c-border);
    border-radius: var(--border-radius);
    font-size: var(--fs-base);
    font-family: var(--font-family);
    outline: none;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}
.form__input:focus-visible {
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
}
.form__error-message {
    margin-top: var(--spacing-2);
    font-size: var(--fs-sm);
    color: var(--c-error);
    min-height: 1.2em;
}

/* Estados do formulário */
.form__group[data-state="invalid"] .form__input {
    border-color: var(--c-error);
}
.form__group[data-state="invalid"] .form__input:focus-visible {
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.2);
}
.form__group[data-state="valid"] .form__input {
    border-color: var(--c-success);
}
.form__group[data-state="valid"] .form__input:focus-visible {
    box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.2);
}

/* Ícone de Status */
.form__status-icon {
    position: absolute;
    right: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity var(--transition-speed);
}
.form__group[data-state="valid"] .form__status-icon,
.form__group[data-state="invalid"] .form__status-icon {
    opacity: 1;
}
.form__group[data-state="valid"] .form__status-icon {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="%2338A169"><path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd" /></svg>');
}
.form__group[data-state="invalid"] .form__status-icon {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="%23E53E3E"><path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd" /></svg>');
}

/* Botão */
.button {
    width: 100%;
    padding: var(--spacing-4);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--fs-base);
    font-weight: var(--fw-bold);
    cursor: pointer;
    transition: background-color var(--transition-speed);
    display: flex;
    justify-content: center;
    align-items: center;
}
.button--primary {
    background-color: var(--c-primary);
    color: var(--c-white);
}
.button:disabled {
    background-color: var(--c-primary-disabled);
    cursor: not-allowed;
}
.button__text { display: block; }
.button__loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--c-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
}
.button--loading .button__text { display: none; }
.button--loading .button__loader { display: block; }

/* Links */
.links { text-align: center; }
.link { color: var(--c-primary); font-weight: var(--fw-medium); text-decoration: none; font-size: 14px; }

/* Cards */
.action-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}
.card {
    padding: var(--spacing-4);
    background-color: var(--c-background);
    border-radius: var(--border-radius);
    border: 1px solid var(--c-border);
    box-shadow: 0 4px 6px -1px var(--c-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    text-decoration: none;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px var(--c-shadow);
}
.card__icon {
    width: 24px;
    height: 24px;
    margin-bottom: var(--spacing-2);
    background-color: var(--c-icon-action);
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
}
#icon-sacola {
    -webkit-mask-image: url(sacola.svg);
    mask-image: url(sacola.svg);
}
#icon-sim {
    -webkit-mask-image: url(sim3.svg);
    mask-image: url(sim3.svg);
}
.card__text {
    font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--c-text-dark);
}

/* ==========================================================================
   5. Animações e Utilidades
   ========================================================================== */
@keyframes spin { to { transform: rotate(360deg); } }