/* ==========================================================================
   TEAP — Design tokens
   "Academic SaaS + game": muito espaço em branco, tipografia forte,
   cards grandes e feedback generoso. Nada infantil, nada LMS dos anos 2000.
   ========================================================================== */

:root {
    /* Marca */
    --brand-900: #062454;
    --brand-800: #0B357E;
    --brand-700: #0F49A8;
    --brand-600: #1668E3;
    --brand-500: #2B7BF0;
    --brand-400: #4FA3F7;
    --brand-300: #86C2FB;
    --brand-200: #BEDDFD;
    --brand-100: #DFEDFE;
    --brand-050: #F1F7FF;

    --violet-600: #7B4FE3;
    --violet-100: #EEE7FD;
    --green-600: #0E9F6E;
    --green-500: #22C55E;
    --green-100: #DCFCE9;
    --amber-500: #F5A524;
    --amber-100: #FEF3D7;
    --red-600: #DC2626;
    --red-500: #EF4444;
    --red-100: #FEE2E2;
    --teal-500: #10B3A3;

    /* Neutros */
    --ink-900: #0B1B33;
    --ink-800: #12294A;
    --ink-700: #1E3A63;
    --ink-600: #3C5A85;
    --ink-500: #64789B;
    --ink-400: #8FA0BC;
    --ink-300: #B9C6DA;
    --ink-200: #DCE5F0;
    --ink-100: #EDF2F9;
    --ink-050: #F6F9FD;
    --white: #FFFFFF;

    /* Superfícies */
    --surface: #FFFFFF;
    --surface-alt: #F6F9FD;
    --surface-sunken: #EDF2F9;
    --surface-invert: #0B1B33;
    --page-bg: linear-gradient(180deg, #F3F8FF 0%, #EAF2FE 40%, #F6F9FD 100%);
    --border: #E2EAF5;
    --border-strong: #CBD8EA;

    --text: var(--ink-900);
    --text-soft: var(--ink-600);
    --text-muted: var(--ink-500);
    --text-invert: #FFFFFF;

    --accent: var(--brand-600);
    --accent-soft: var(--brand-100);
    --accent-text: var(--brand-700);

    /* Sombras */
    --shadow-xs: 0 1px 2px rgba(11, 27, 51, .06);
    --shadow-sm: 0 2px 8px rgba(11, 27, 51, .06);
    --shadow-md: 0 8px 24px rgba(11, 27, 51, .08);
    --shadow-lg: 0 18px 48px rgba(11, 27, 51, .12);
    --shadow-xl: 0 30px 70px rgba(11, 27, 51, .18);
    --shadow-brand: 0 10px 24px rgba(22, 104, 227, .28);
    --shadow-inset: inset 0 -3px 0 rgba(11, 27, 51, .10);

    /* Raios */
    --r-xs: 8px;
    --r-sm: 12px;
    --r-md: 16px;
    --r-lg: 22px;
    --r-xl: 28px;
    --r-2xl: 36px;
    --r-pill: 999px;

    /* Espaços */
    --sp-1: 4px;
    --sp-2: 8px;
    --sp-3: 12px;
    --sp-4: 16px;
    --sp-5: 20px;
    --sp-6: 24px;
    --sp-7: 32px;
    --sp-8: 40px;
    --sp-9: 56px;
    --sp-10: 72px;

    /* Tipografia */
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-display: "Nunito", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-hand: "Caveat", "Bradley Hand", "Segoe Script", cursive;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;

    --text-xs: .75rem;
    --text-sm: .875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.3rem;
    --text-2xl: 1.6rem;
    --text-3xl: 2rem;
    --text-4xl: 2.6rem;
    --text-5xl: 3.4rem;

    /* Movimento — rápido, com mola, nunca exagerado */
    --ease-out: cubic-bezier(.22, 1, .36, 1);
    --ease-in-out: cubic-bezier(.65, 0, .35, 1);
    --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
    --ease-snap: cubic-bezier(.2, .9, .2, 1);

    --dur-instant: 90ms;
    --dur-fast: 160ms;
    --dur-base: 260ms;
    --dur-slow: 420ms;
    --dur-slower: 640ms;

    /* Layout */
    --app-max: 1160px;
    --phone-max: 480px;
    --tap: 48px;
    --header-h: 64px;
    --tabbar-h: 68px;
}

/* Tema escuro — completo, como pede a direção visual. */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --surface: #101C31;
        --surface-alt: #0B1525;
        --surface-sunken: #16243C;
        --surface-invert: #F6F9FD;
        --page-bg: linear-gradient(180deg, #0A1425 0%, #0D1B30 45%, #0A1526 100%);
        --border: #1E3050;
        --border-strong: #2A436B;

        --text: #EAF1FB;
        --text-soft: #A9BDD8;
        --text-muted: #8296B5;
        --text-invert: #0B1B33;

        --accent: var(--brand-400);
        --accent-soft: rgba(79, 163, 247, .14);
        --accent-text: var(--brand-300);

        /* A escala neutra também precisa inverter: ela pinta superfícies
           apagadas — lição bloqueada, estrela vazia, coração perdido. Parar
           no 200 deixava esses elementos quase brancos sobre o fundo escuro. */
        --ink-100: #16243C;
        --ink-200: #1E3050;
        --ink-300: #2A436B;
        --ink-400: #3A5885;

        --shadow-xs: 0 1px 2px rgba(0, 0, 0, .3);
        --shadow-sm: 0 2px 10px rgba(0, 0, 0, .34);
        --shadow-md: 0 10px 28px rgba(0, 0, 0, .40);
        --shadow-lg: 0 20px 52px rgba(0, 0, 0, .48);
        --shadow-xl: 0 32px 76px rgba(0, 0, 0, .55);
        --shadow-brand: 0 10px 24px rgba(22, 104, 227, .40);
    }
}

:root[data-theme="dark"] {
    --surface: #101C31;
    --surface-alt: #0B1525;
    --surface-sunken: #16243C;
    --surface-invert: #F6F9FD;
    --page-bg: linear-gradient(180deg, #0A1425 0%, #0D1B30 45%, #0A1526 100%);
    --border: #1E3050;
    --border-strong: #2A436B;

    --text: #EAF1FB;
    --text-soft: #A9BDD8;
    --text-muted: #8296B5;
    --text-invert: #0B1B33;

    --accent: var(--brand-400);
    --accent-soft: rgba(79, 163, 247, .14);
    --accent-text: var(--brand-300);

    --ink-100: #16243C;
    --ink-200: #1E3050;
    --ink-300: #2A436B;
    --ink-400: #3A5885;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, .3);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, .34);
    --shadow-md: 0 10px 28px rgba(0, 0, 0, .40);
    --shadow-lg: 0 20px 52px rgba(0, 0, 0, .48);
    --shadow-xl: 0 32px 76px rgba(0, 0, 0, .55);
    --shadow-brand: 0 10px 24px rgba(22, 104, 227, .40);
}