/* ========================================
   CuantoApostamos.com - World Cup 2026
   Responsive SPA Styles
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
    --color-primary: #1a237e;
    --color-primary-light: #3949ab;
    --color-primary-dark: #0d1542;
    --color-accent: #ffd600;
    --color-accent-dark: #c7a500;
    --color-success: #2e7d32;
    --color-error: #c62828;
    --color-warning: #f57f17;
    --color-bg: #f5f5f5;
    --color-surface: #ffffff;
    --color-text: #212121;
    --color-text-secondary: #616161;
    --color-border: #e0e0e0;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --header-height: 64px;
    --max-width: 1200px;
    --max-width-narrow: 560px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

/* --- Layout --- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container--narrow {
    max-width: var(--max-width-narrow);
}

.main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* --- Header --- */
.header {
    background-color: var(--color-primary-dark);
    color: #fff;
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px var(--color-shadow);
}

.header__container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.header__logo {
    display: flex;
    align-items: center;
}

.header__logo-img {
    height: 44px;
    width: auto;
}

.header__menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.header__menu-icon,
.header__menu-icon::before,
.header__menu-icon::after {
    display: block;
    width: 24px;
    height: 3px;
    background-color: #fff;
    border-radius: 2px;
    position: relative;
    transition: transform 0.3s ease;
}

.header__menu-icon::before,
.header__menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.header__menu-icon::before {
    top: -7px;
}

.header__menu-icon::after {
    top: 7px;
}

/* --- Navigation --- */
.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
}

.nav__link {
    color: #fff;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    transition: background-color 0.2s ease;
}

.nav__link:hover {
    background-color: var(--color-primary-light);
    text-decoration: none;
}

.nav__link--logout {
    color: var(--color-accent);
}

.nav__lang-select {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    cursor: pointer;
}

.nav__lang-select option {
    background: var(--color-primary-dark);
    color: #fff;
}

/* Auth-based nav visibility (controlled by JS) */
.nav__item--guest-only,
.nav__item--admin-only {
    display: none;
}

/* --- Views --- */
.view {
    animation: fadeIn 0.2s ease-in;
}

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

.view__title {
    font-size: var(--font-size-2xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-lg);
}

/* --- Landing Page --- */
.landing {
    text-align: center;
}

.landing__title {
    font-size: var(--font-size-2xl);
    color: var(--color-primary-dark);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.countdown {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #1a237e, #283593);
    border-radius: var(--radius-md);
    color: #fff;
}

.countdown__label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 var(--spacing-md) 0;
    opacity: 0.8;
}

.countdown__timer {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.countdown__unit {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.countdown__value {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.countdown__name {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.7;
    margin-top: 4px;
}

.landing__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.landing__empty {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    padding: var(--spacing-2xl) 0;
}

.landing__cta {
    margin-top: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

/* --- Match Cards --- */
.match-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.match-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px var(--color-shadow);
    padding: var(--spacing-lg);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.match-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--color-shadow);
}

.match-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.match-card__stage {
    font-size: var(--font-size-sm);
    color: var(--color-primary-light);
    font-weight: 600;
    text-transform: uppercase;
}

.match-card__time {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.match-card__teams {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.match-card__team {
    font-size: var(--font-size-lg);
    font-weight: 700;
    text-align: center;
    flex: 1;
}

.match-card__vs {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 400;
}

.match-card__status {
    text-align: center;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.match-card__status--open {
    background-color: #e8f5e9;
    color: var(--color-success);
}

.match-card__status--closed {
    background-color: #ffebee;
    color: var(--color-error);
}

.match-card__status--scored {
    background-color: #e3f2fd;
    color: #1565c0;
}

.match-card--completed {
    opacity: 0.85;
    border-left: 3px solid #1565c0;
}

.predictions__section-title {
    font-size: 1.1rem;
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
    color: var(--color-primary);
}

.predictions__section-title--completed {
    color: #666;
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.prediction-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.prediction-result--correct {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.prediction-result--wrong {
    background-color: #ffebee;
    color: #c62828;
}

.prediction-result--none {
    background-color: #f5f5f5;
    color: #999;
}

.prediction-result__points {
    font-weight: 700;
}

/* --- Prediction Form (inside match card) --- */
.prediction-form {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
}

.prediction-form__options {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.prediction-form__option {
    flex: 1;
}

.prediction-form__radio {
    display: none;
}

.prediction-form__label {
    display: block;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-xs);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.prediction-form__label:hover {
    border-color: var(--color-primary-light);
}

.prediction-form__radio:checked + .prediction-form__label {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: #fff;
}

.prediction-form--saved .prediction-form__radio:checked + .prediction-form__label {
    border-color: #2e7d32;
    background-color: #2e7d32;
    color: #fff;
}

.predictions__legend {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: #666;
    margin-bottom: var(--spacing-lg);
}

.predictions__legend-item {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 3px;
}

.predictions__legend-item--blue {
    background-color: var(--color-primary);
}

.predictions__legend-item--green {
    background-color: #2e7d32;
}

.prediction-form__submit {
    width: 100%;
}

.prediction-form__points {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

.prediction-form__points--awarded {
    color: var(--color-success);
    font-weight: 600;
}

/* --- Auth Card --- */
.auth-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px var(--color-shadow);
    padding: var(--spacing-xl);
}

.auth-card__title {
    font-size: var(--font-size-xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.auth-card__footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* --- Forms --- */
.form__group {
    margin-bottom: var(--spacing-md);
}

.form__group--checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form__label--checkbox {
    margin-bottom: 0;
    font-weight: 400;
    cursor: pointer;
}

.form__input,
.form__textarea,
.form__select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: border-color 0.2s ease;
    background-color: var(--color-surface);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(57, 73, 171, 0.1);
}

.form__checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.form__hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.form__error {
    background-color: #ffebee;
    color: var(--color-error);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.form__success {
    background-color: #e8f5e9;
    color: #2e7d32;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    line-height: 1.5;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn--primary {
    background-color: var(--color-primary);
    color: #fff;
}

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

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

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

.btn--danger {
    background-color: #c62828;
    color: #fff;
}

.btn--danger:hover {
    background-color: #b71c1c;
}

.btn--sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.admin__status--enabled {
    color: #2e7d32;
}

.admin__status--disabled {
    color: #c62828;
}

.btn--full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* --- Leaderboard Table --- */
.leaderboard__table,
.admin__table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 8px var(--color-shadow);
}

.leaderboard__table th,
.leaderboard__table td,
.admin__table th,
.admin__table td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.leaderboard__table th,
.admin__table th {
    background-color: var(--color-primary-dark);
    color: #fff;
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.leaderboard__table tbody tr:hover,
.admin__table tbody tr:hover {
    background-color: #f5f5ff;
}

.leaderboard__table tbody tr:last-child td,
.admin__table tbody tr:last-child td {
    border-bottom: none;
}

/* Top 3 leaderboard highlight */
.leaderboard__table tbody tr:nth-child(1) td {
    background-color: #fff9c4;
}

.leaderboard__table tbody tr:nth-child(2) td {
    background-color: #f5f5f5;
}

.leaderboard__table tbody tr:nth-child(3) td {
    background-color: #fff3e0;
}

.lb__movement {
    font-size: 0.8rem;
    font-weight: 600;
}

.lb__movement--up {
    color: #2e7d32;
}

.lb__movement--down {
    color: #c62828;
}

.lb__movement--same {
    color: #999;
}

/* --- Invitations --- */
.invitations__summary {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: 0 1px 4px var(--color-shadow);
}

.invitations__result {
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
}

.invitations__result--sent {
    color: var(--color-success);
}

.invitations__result--failed {
    color: var(--color-error);
}

.invitations__result--skipped {
    color: var(--color-warning);
}

.invitations__section {
    margin-bottom: var(--spacing-xl);
}

.invitations__subtitle {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.invitations__table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-md);
}

.invitations__table th,
.invitations__table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.invitations__table th {
    background-color: var(--color-bg-alt);
    font-weight: 600;
}

.invitations__table a {
    color: var(--color-primary);
}

.invitations__link-result {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
}

.invitations__link-box {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.invitations__link-box .form__input {
    flex: 1;
}

.invitations__success {
    color: var(--color-success);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

/* --- Admin --- */
.admin__section {
    margin-bottom: var(--spacing-xl);
}

.admin__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
}

/* --- Predictions Tabs --- */
.predictions__tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.predictions__tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.predictions__tab:hover {
    border-color: var(--color-primary-light);
}

.predictions__tab--active {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: #fff;
}

/* --- Documentation --- */
.docs__section {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 1px 4px var(--color-shadow);
    line-height: 1.8;
}

.docs__heading {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-primary);
}

/* --- Legal --- */
.legal {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    box-shadow: 0 1px 4px var(--color-shadow);
    line-height: 1.8;
}

/* --- Footer --- */
.footer {
    background-color: var(--color-primary-dark);
    color: #fff;
    padding: var(--spacing-lg) 0;
    margin-top: auto;
}

.footer__container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    text-align: center;
}

.footer__links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.footer__link {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
}

.footer__link:hover {
    color: #fff;
}

.footer__copy {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

/* --- Loading Spinner --- */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

.loading::after {
    content: '';
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet and below */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .header__menu-toggle {
        display: block;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-primary-dark);
        padding: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
        box-shadow: 0 4px 8px var(--color-shadow);
        z-index: 99;
    }

    .nav--open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .nav__link {
        display: block;
        padding: var(--spacing-md);
        border-radius: 0;
        font-size: var(--font-size-base);
    }

    .main {
        padding: var(--spacing-md) 0;
    }

    .view__title {
        font-size: var(--font-size-xl);
    }

    .landing__title {
        font-size: var(--font-size-xl);
    }

    .match-list {
        grid-template-columns: 1fr;
    }

    .match-card__teams {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .predictions__tabs {
        flex-direction: column;
    }

    .predictions__tab {
        text-align: center;
    }

    .prediction-form__options {
        flex-direction: column;
    }

    .landing__cta {
        flex-direction: column;
    }

    .leaderboard__table th,
    .leaderboard__table td,
    .admin__table th,
    .admin__table td {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .auth-card {
        padding: var(--spacing-lg);
        border-radius: var(--radius-md);
    }
}

/* Small phones */
@media (max-width: 400px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .match-card {
        padding: var(--spacing-md);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}