:root {
    --color-primary: #6b4a2b;
    --color-primary-dark: #4f341f;
    --color-dark: #141414;
    --color-light: #ffffff;
    --color-bg: #f6f2ee;
    --color-border: #ded2c7;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    background: linear-gradient(180deg, #f8f3ed 0%, #efe7df 100%);
    color: var(--color-dark);
}

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

.container {
    width: min(1100px, 92%);
    margin-inline: auto;
}

.site-header {
    background: var(--color-dark);
    color: var(--color-light);
    position: sticky;
    top: 0;
    z-index: 20;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 0;
}

.brand {
    color: var(--color-light);
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav a {
    color: #f4e9dd;
}

.main-content {
    padding: 2rem 0 4rem;
}

.hero {
    border: 1px solid var(--color-border);
    padding: 2rem;
    border-radius: 16px;
    background: radial-gradient(circle at top left, #ffffff 0%, #f3e7da 100%);
}

.hero-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.btn {
    background: var(--color-primary);
    color: #fff;
    border: 0;
    border-radius: 10px;
    padding: 0.7rem 1rem;
    cursor: pointer;
    display: inline-block;
}

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

.btn.secondary {
    background: #222;
}

.btn.small {
    padding: 0.45rem 0.8rem;
    font-size: 0.9rem;
}

.btn.danger {
    background: #9c1c1c;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1rem;
}

.stack {
    display: grid;
    gap: 1rem;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid #c8b6a6;
    border-radius: 8px;
    padding: 0.65rem;
    background: #fff;
}

label {
    display: grid;
    gap: 0.4rem;
}

.auth-card {
    background: #fff;
    max-width: 620px;
    margin-inline: auto;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 1.25rem;
}

.alert {
    border-radius: 10px;
    padding: 0.8rem;
    margin-bottom: 1rem;
}

.alert.success {
    background: #e6f6e8;
    border: 1px solid #bde3c1;
}

.alert.error {
    background: #fdeaea;
    border: 1px solid #f4bdbd;
}

.badge {
    display: inline-block;
    padding: 0.3rem 0.6rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.badge.success {
    background: #dff4df;
}

.badge.locked {
    background: #f2ece7;
}

.progress {
    height: 10px;
    background: #eee2d8;
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--color-primary);
}

.chat-box {
    display: grid;
    gap: 0.65rem;
    max-height: 360px;
    overflow: auto;
    padding: 0.5rem;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 10px;
}

.chat-message {
    width: fit-content;
    max-width: 85%;
    padding: 0.6rem 0.75rem;
    border-radius: 12px;
}

.chat-message.mine {
    background: #ede1d4;
    justify-self: end;
}

.chat-message.other {
    background: #f7f7f7;
    justify-self: start;
}

.inline-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.site-footer {
    background: #111;
    color: #e8d9ca;
    padding: 1rem 0;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}