/* styles/global.css — variáveis, reset, tipografia, base */

:root {
    /* Cores */
    --color-primary: #0D3B3D;
    --color-primary-dark: #082E30;
    --color-primary-light: #1A4F52;

    --color-accent: #10B981;
    --color-accent-light: #A7F3D0;
    --color-accent-dark: #059669;

    --color-gold: #D4AF37;
    --color-warning: #FF6B6B;

    --color-bg: #F8F9FA;
    --color-surface: #FFFFFF;
    --color-text: #2C3E50;
    --color-text-light: #7F8C8D;
    --color-text-white: #FFFFFF;

    --color-border: #E8ECEF;
    --color-shadow: rgba(13, 59, 61, 0.1);

    /* Tipografia */
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    --font-mono: 'Courier Prime', monospace;

    /* Espaçamentos */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
    --transition-slow: 0.6s cubic-bezier(0.23, 1, 0.32, 1);

    /* Layout */
    --header-height: 76px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;

    /* Z-index */
    --z-header: 100;
    --z-fab: 150;
    --z-modal: 200;
    --z-tooltip: 300;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0F1419;
        --color-surface: #161D27;
        --color-text: #E8E9F3;
        --color-text-light: #A8AEC8;
        --color-border: #1E2635;
        --color-shadow: rgba(0, 0, 0, 0.35);
    }
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
    /* Cor base da página fica no html para o canvas de fundo (z-index -1)
       aparecer entre este fundo e o conteúdo. */
    background-color: var(--color-bg);
}

/* Canvas com a animação 3D de fundo — fica atrás de todo o conteúdo,
   sobre a cor base do html. Não captura cliques nem foco. */
#bg-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: transparent;
    line-height: 1.6;
    overflow-x: hidden;
    padding-bottom: 64px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

@media (prefers-color-scheme: dark) {
    h1, h2, h3, h4, h5, h6 {
        color: var(--color-text-white);
    }
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3rem); }
h2 { font-size: clamp(1.6rem, 2.5vw + 1rem, 2.25rem); }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.1rem; }

p {
    color: var(--color-text);
}

a {
    color: var(--color-accent-dark);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent);
}

button {
    font-family: var(--font-primary);
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-normal);
}

ul {
    list-style: none;
}

svg {
    display: block;
    max-width: 100%;
}

img {
    max-width: 100%;
    display: block;
}

/* Inputs */
input, textarea, select {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    width: 100%;
    transition: all var(--transition-normal);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

input:invalid:not(:placeholder-shown) {
    border-color: var(--color-warning);
}

input.is-invalid,
textarea.is-invalid {
    border-color: var(--color-warning);
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

/* Acessibilidade */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--color-accent);
    color: var(--color-text-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: var(--z-tooltip);
    border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
    left: 0;
}

:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Layout helpers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-3xl) 0;
}

.hero,
.checkout {
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.section-title {
    text-align: center;
    margin: 0 auto var(--spacing-2xl);
    position: relative;
    max-width: 700px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    margin: var(--spacing-md) auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-top: calc(var(--spacing-2xl) * -1 + var(--spacing-md));
    margin-bottom: var(--spacing-2xl);
}

.eyebrow {
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent-dark);
    margin-bottom: var(--spacing-sm);
}