/* =========================================================
   ARENA — MINIMAL PRODUCT UI
   Только визуальные переопределения.
   Не меняет существующие flex/grid-схемы.
   ========================================================= */

:root {
    --apple-bg: #f5f5f7;
    --apple-surface: rgba(255, 255, 255, 0.88);
    --apple-surface-solid: #ffffff;
    --apple-surface-secondary: #fbfbfd;

    --apple-text: #1d1d1f;
    --apple-text-secondary: #6e6e73;
    --apple-text-tertiary: #86868b;

    --apple-border: rgba(0, 0, 0, 0.08);
    --apple-border-strong: rgba(0, 0, 0, 0.14);

    --apple-blue: #0071e3;
    --apple-violet: #8b5cf6;
    --apple-red: #d91f26;

    --apple-accent-gradient:
        linear-gradient(
            105deg,
            #0071e3 0%,
            #5856d6 48%,
            #af52de 100%
        );

    --apple-radius: 18px;
    --apple-radius-small: 12px;
    --apple-radius-large: 28px;
    --apple-radius-pill: 999px;

    --apple-shadow:
        0 20px 60px rgba(0, 0, 0, 0.08);

    --apple-shadow-hover:
        0 28px 70px rgba(0, 0, 0, 0.12);

    --apple-transition:
        240ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* Общая основа */

html {
    scroll-behavior: smooth;
    background: var(--apple-bg);
}

body {
    background:
        radial-gradient(
            circle at 50% -20%,
            rgba(88, 86, 214, 0.06),
            transparent 34rem
        ),
        var(--apple-bg);

    color: var(--apple-text);
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;

    font-size: 16px;
    font-weight: 400;
    line-height: 1.55;

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body,
input,
textarea,
select,
button {
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;
}

::selection {
    background: rgba(88, 86, 214, 0.16);
    color: var(--apple-text);
}

/* Типографика */

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--apple-text);
    font-weight: 700;
    letter-spacing: -0.035em;
    text-wrap: balance;
}

h1 {
    font-size: clamp(42px, 6vw, 76px);
    line-height: 0.98;
}

h2 {
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.05;
}

h3 {
    font-size: clamp(22px, 3vw, 30px);
    line-height: 1.15;
}

p,
li,
td,
label {
    font-weight: 400;
}

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

strong,
b {
    color: var(--apple-text);
    font-weight: 600;
}

.muted,
.helptext,
.help-text,
small {
    color: var(--apple-text-secondary) !important;
    font-weight: 400;
}

/* Ссылки */

a {
    color: var(--apple-text);
    text-decoration: none;
    text-underline-offset: 4px;
    transition:
        color var(--apple-transition),
        opacity var(--apple-transition),
        text-decoration-color var(--apple-transition);
}

a:hover {
    color: var(--apple-blue);
}

main a:not(.button):not(.btn):not(.card) {
    text-decoration: underline;
    text-decoration-color: transparent;
    text-decoration-thickness: 1px;
}

main a:not(.button):not(.btn):not(.card):hover {
    text-decoration-color: currentColor;
}

/* Шапка */

header,
.site-header,
.main-header {
    border-bottom: 1px solid var(--apple-border) !important;
    background: rgba(245, 245, 247, 0.78) !important;
    box-shadow: none !important;

    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
}

nav a,
header a {
    color: var(--apple-text);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.01em;
}

nav a:hover,
header a:hover {
    color: var(--apple-text-secondary);
}

/* Карточки и секции */

.card,
.panel,
.box,
.dashboard-card,
.exam-card,
.pricing-card,
.question-card,
.result-card {
    border: 1px solid var(--apple-border) !important;
    border-radius: var(--apple-radius) !important;
    background: var(--apple-surface) !important;
    color: var(--apple-text) !important;
    box-shadow: var(--apple-shadow) !important;

    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);

    transition:
        transform var(--apple-transition),
        box-shadow var(--apple-transition),
        border-color var(--apple-transition),
        background-color var(--apple-transition);
}

.card:hover,
.exam-card:hover,
.pricing-card:hover,
.dashboard-card:hover {
    border-color: var(--apple-border-strong) !important;
    box-shadow: var(--apple-shadow-hover) !important;
}

/*
   Не двигаем все карточки автоматически:
   в рабочих интерфейсах это может мешать.
   Подъём применяется только к ссылкам-карточкам.
*/

a.card:hover,
a.exam-card:hover,
a.pricing-card:hover {
    transform: translateY(-4px);
}

.card.dark,
.dark-card {
    border-color: rgba(255, 255, 255, 0.08) !important;
    background:
        linear-gradient(
            145deg,
            #1d1d1f 0%,
            #2c2c2e 100%
        ) !important;
    color: #f5f5f7 !important;
}

.card.dark h1,
.card.dark h2,
.card.dark h3,
.card.dark h4,
.card.dark p,
.card.dark b,
.card.dark strong,
.dark-card h1,
.dark-card h2,
.dark-card h3,
.dark-card p {
    color: #f5f5f7;
}

.card.dark .muted,
.dark-card .muted {
    color: rgba(255, 255, 255, 0.62) !important;
}

/* Кнопки: спокойно, без ярких заливок */

.button,
.btn,
button.button,
a.button,
button.btn,
input[type="submit"] {
    min-height: 46px;
    padding: 11px 18px;

    border: 1px solid var(--apple-border-strong) !important;
    border-radius: var(--apple-radius-pill) !important;

    background: rgba(255, 255, 255, 0.72) !important;
    color: var(--apple-text) !important;

    font-size: 15px;
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: -0.01em;
    text-decoration: none !important;

    box-shadow: none !important;
    cursor: pointer;

    transition:
        transform var(--apple-transition),
        background-color var(--apple-transition),
        border-color var(--apple-transition),
        color var(--apple-transition),
        opacity var(--apple-transition);
}

.button:hover,
.btn:hover,
button.button:hover,
a.button:hover,
button.btn:hover,
input[type="submit"]:hover {
    border-color: rgba(0, 0, 0, 0.22) !important;
    background: #ffffff !important;
    color: var(--apple-text) !important;
    transform: translateY(-1px);
}

.button:active,
.btn:active,
button:active,
input[type="submit"]:active {
    transform: scale(0.98);
}

/* Главная кнопка остаётся сдержанной */

.button.primary,
.btn-primary,
button.primary,
input[type="submit"].primary {
    border-color: transparent !important;
    background: var(--apple-text) !important;
    color: #ffffff !important;
}

.button.primary:hover,
.btn-primary:hover,
button.primary:hover,
input[type="submit"].primary:hover {
    background: #000000 !important;
    color: #ffffff !important;
}

/* Вторичные и опасные действия */

.button.secondary,
.btn-secondary {
    background: transparent !important;
    color: var(--apple-text) !important;
}

.button.danger,
.btn-danger,
button.danger {
    border-color: rgba(217, 31, 38, 0.28) !important;
    background: transparent !important;
    color: var(--apple-red) !important;
}

.button.danger:hover,
.btn-danger:hover,
button.danger:hover {
    border-color: var(--apple-red) !important;
    background: rgba(217, 31, 38, 0.05) !important;
}

/* Поля */

input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
textarea,
select,
.form-control {
    min-height: 48px;
    padding: 12px 15px;

    border: 1px solid var(--apple-border-strong) !important;
    border-radius: var(--apple-radius-small) !important;

    background: rgba(255, 255, 255, 0.82) !important;
    color: var(--apple-text) !important;

    font-size: 16px;
    font-weight: 400;

    outline: none;
    box-shadow: none !important;

    transition:
        border-color var(--apple-transition),
        background-color var(--apple-transition),
        box-shadow var(--apple-transition);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:hover,
textarea:hover,
select:hover {
    border-color: rgba(0, 0, 0, 0.22) !important;
}

input:focus,
textarea:focus,
select:focus,
.form-control:focus {
    border-color: rgba(0, 113, 227, 0.58) !important;
    background: #ffffff !important;
    box-shadow:
        0 0 0 4px rgba(0, 113, 227, 0.1) !important;
}

input::placeholder,
textarea::placeholder {
    color: var(--apple-text-tertiary);
}

label {
    color: var(--apple-text);
    font-size: 14px;
    font-weight: 500;
}

/* Чипы и статусы */

.chip,
.badge,
.tag,
.status {
    border: 1px solid var(--apple-border) !important;
    border-radius: var(--apple-radius-pill) !important;
    background: rgba(255, 255, 255, 0.72) !important;
    color: var(--apple-text-secondary) !important;

    font-size: 13px;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.chip.gray {
    background: rgba(0, 0, 0, 0.035) !important;
    color: var(--apple-text-secondary) !important;
}

/* Акцентные подписи */

.eyebrow,
.red-eyebrow,
.kicker,
.overline {
    background: var(--apple-accent-gradient);
    color: transparent !important;
    background-clip: text;
    -webkit-background-clip: text;

    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* Градиент только для декоративного текста */

.gradient-text,
.hero-accent {
    background: var(--apple-accent-gradient);
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
}

/* Строки результатов */

.score-row {
    gap: 18px;
    padding-top: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--apple-border) !important;
}

.score-row:last-child {
    border-bottom: 0 !important;
}

.metric,
.score-value,
.result-score {
    color: var(--apple-text);
    font-weight: 700;
    letter-spacing: -0.04em;
}

/* Таблицы */

table,
.table {
    border-spacing: 0;
    color: var(--apple-text);
}

table th,
.table th {
    border-bottom: 1px solid var(--apple-border) !important;
    background: transparent !important;
    color: var(--apple-text-secondary);

    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-align: left;
    text-transform: uppercase;
}

table td,
.table td {
    border-bottom: 1px solid var(--apple-border) !important;
    color: var(--apple-text);
}

table tr,
.table tr {
    transition: background-color var(--apple-transition);
}

table tbody tr:hover,
.table tbody tr:hover {
    background: rgba(0, 0, 0, 0.018);
}

/* Уведомления */

.notice,
.alert,
.message {
    border: 1px solid var(--apple-border) !important;
    border-radius: var(--apple-radius) !important;
    background: rgba(255, 255, 255, 0.82) !important;
    color: var(--apple-text) !important;
    box-shadow: none !important;
}

.alert-error,
.errorlist,
.notice.error {
    border-color: rgba(217, 31, 38, 0.2) !important;
    background: rgba(217, 31, 38, 0.045) !important;
    color: #b4232a !important;
}

.alert-success,
.notice.success {
    border-color: rgba(52, 199, 89, 0.2) !important;
    background: rgba(52, 199, 89, 0.055) !important;
    color: #16763b !important;
}

/* Изображения и загрузки */

.card img,
.review-attachment,
.result-attachment-card,
.selected-file-card,
.attachment-preview,
.preview-image {
    border-radius: var(--apple-radius) !important;
}

.review-attachment,
.result-attachment-card,
.selected-file-card {
    border-color: var(--apple-border) !important;
    background: var(--apple-surface-solid) !important;
    box-shadow: var(--apple-shadow) !important;
}

/* Модальные окна */

.modal,
.dialog,
.lightbox-panel,
.modal-content {
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    border-radius: var(--apple-radius-large) !important;
    background: rgba(28, 28, 30, 0.92) !important;
    box-shadow:
        0 30px 100px rgba(0, 0, 0, 0.35) !important;

    -webkit-backdrop-filter: blur(28px);
    backdrop-filter: blur(28px);
}

/* Разделители */

hr {
    height: 1px;
    border: 0;
    background: var(--apple-border);
}

/* Скроллбар */

* {
    scrollbar-width: thin;
    scrollbar-color:
        rgba(0, 0, 0, 0.2)
        transparent;
}

*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-track {
    background: transparent;
}

*::-webkit-scrollbar-thumb {
    border: 2px solid transparent;
    border-radius: var(--apple-radius-pill);
    background: rgba(0, 0, 0, 0.18);
    background-clip: padding-box;
}

*::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.28);
    background-clip: padding-box;
}

/* Анимация появления */

.apple-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity 700ms cubic-bezier(0.22, 1, 0.36, 1),
        transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}

.apple-reveal.apple-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Пользователям без анимаций */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    .apple-reveal {
        opacity: 1;
        transform: none;
    }
}

/* Телефон */

@media (max-width: 720px) {
    body {
        font-size: 15px;
    }

    h1 {
        font-size: clamp(40px, 12vw, 56px);
    }

    h2 {
        font-size: clamp(28px, 9vw, 38px);
    }

    .card,
    .panel,
    .box,
    .dashboard-card,
    .exam-card,
    .pricing-card {
        border-radius: 16px !important;
        box-shadow:
            0 12px 36px rgba(0, 0, 0, 0.07) !important;
    }

    .button,
    .btn,
    button.button,
    a.button,
    input[type="submit"] {
        min-height: 46px;
    }

    header,
    .site-header,
    .main-header {
        -webkit-backdrop-filter: saturate(160%) blur(16px);
        backdrop-filter: saturate(160%) blur(16px);
    }
}