:root {
    --bg: #f6f4ef;
    --card: #ffffff;
    --text: #1a1a1a;
    --muted: #5c5c5c;
    --primary: #c45c26;
    --primary-dark: #9a4520;
    --border: #e0dbd3;
    --success-bg: #e8f5e9;
    --error-bg: #fdecea;
    --info-bg: #e8f0fe;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    font-size: 16px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
}

.site-header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.logo {
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    font-size: 1.25rem;
}

.site-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
}

.site-nav a {
    color: var(--text);
    text-decoration: none;
    padding: 0.35rem 0;
}

.site-nav a:hover {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.5rem;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
}

.user-menu {
    position: relative;
}

.user-menu-trigger {
    display: inline-flex;
    align-items: center;
    background: none;
    border: none;
    font: inherit;
    cursor: pointer;
    color: var(--muted);
    font-size: 0.9rem;
    padding: 0.35rem 0;
}

.user-menu-trigger::after {
    content: " ▾";
    font-size: 0.75rem;
}

.user-menu-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 0.35rem);
    min-width: 10rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 0.35rem 0;
    z-index: 100;
}

.user-menu-panel[hidden] {
    display: none;
}

.user-menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.user-menu-list li {
    margin: 0;
    padding: 0;
}

.user-menu-list form {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
}

.user-menu-item {
    display: block;
    width: 100%;
    box-sizing: border-box;
    margin: 0;
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    text-align: left;
    font: inherit;
    line-height: inherit;
    color: var(--text);
    cursor: pointer;
    appearance: none;
}

.user-menu-item:hover {
    background: var(--bg);
    color: var(--primary);
}

.settings-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1.5rem;
    margin: 0 0 1.5rem;
}

.settings-list dt {
    font-weight: 600;
    color: var(--muted);
}

.settings-list dd {
    margin: 0;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.login-card {
    max-width: 480px;
    margin: 2rem auto;
}

h1, h2, h3 {
    margin-top: 0;
}

.hint, .muted {
    color: var(--muted);
    font-size: 0.95rem;
}

.optional {
    font-weight: normal;
    color: var(--muted);
    font-size: 0.85rem;
}

.form label {
    display: block;
    margin: 1rem 0 0.35rem;
    font-weight: 600;
}

.form input[type="text"],
.form input[type="email"],
.form input[type="password"] {
    width: 100%;
    padding: 0.65rem 0.75rem;
    font-size: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
}

.invite-code-input {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: ui-monospace, monospace;
}

.btn {
    display: inline-block;
    margin-top: 1.25rem;
    padding: 0.65rem 1.25rem;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    width: 100%;
}

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

.auth-link {
    margin-top: 1.25rem;
    text-align: center;
    color: var(--muted);
}

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

.flash-messages {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.flash-success, .flash.info {
    background: var(--success-bg);
}

.flash-error, .flash.error {
    background: var(--error-bg);
}

.flash-warning {
    background: #fff8e1;
}

.form-errors, .field-error {
    color: #b42318;
    font-size: 0.9rem;
}

.form-errors {
    list-style: none;
    padding: 0.75rem;
    background: var(--error-bg);
    border-radius: 8px;
}

.field-error {
    margin: 0.25rem 0 0;
}

.info-box {
    background: var(--info-bg);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.invite-code {
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    background: var(--card);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.link-list {
    padding-left: 1.25rem;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.app-card {
    display: block;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    text-decoration: none;
    color: inherit;
    background: var(--bg);
    min-height: 44px;
}

.app-card:hover {
    border-color: var(--primary);
}

.app-card h3 {
    margin: 0 0 0.35rem;
    color: var(--primary);
}

.app-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--muted);
}

.coming-soon-badge {
    display: inline-block;
    background: var(--info-bg);
    color: var(--primary-dark);
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .nav-toggle {
        display: flex;
    }

    .site-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        padding: 0.5rem 0 1rem;
        border-top: 1px solid var(--border);
    }

    .site-nav.is-open {
        display: flex;
    }

    .user-menu {
        width: 100%;
    }

    .user-menu-panel {
        position: static;
        box-shadow: none;
        border: none;
        padding-left: 0;
    }

    .login-card {
        margin: 1rem auto;
        padding: 1.25rem;
    }

    .app-grid {
        grid-template-columns: 1fr;
    }

    .btn-primary {
        min-height: 44px;
    }
}