:root {
    --ink: #20252a;
    --muted: #7b7d81;
    --paper: #f4f7fb;
    --card: #ffffff;
    --line: #dbe3ec;
    --blue: #2463a6;
    --blue-dark: #174879;
    --light-blue: #eaf2fb;
    --green: #26734d;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: Arial, sans-serif;
    line-height: 1.5;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 900px;
    margin: 0 auto;
    padding: 26px 32px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    font-size: 1.4rem;
    font-weight: 700;
    text-decoration: none;
}

.page-shell {
    max-width: 760px;
    margin: 0 auto;
    padding: 40px 24px 30px;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--blue);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

h2 {
    margin: 0;
    line-height: 1.1;
}

h2 {
    font-size: 1.55rem;
}

.composer-panel,
.login-panel,
.post-card {
    border: 1px solid var(--line);
    background: var(--card);
}

.composer-panel,
.login-panel {
    padding: 25px;
    border-radius: 8px;
}

.section-heading,
.feed-heading,
.composer-footer,
.login-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.post-count {
    color: var(--muted);
    font-size: 0.8rem;
}

textarea {
    display: block;
    width: 100%;
    min-height: 135px;
    margin: 24px 0 14px;
    padding: 18px;
    resize: vertical;
    border: 1px solid var(--line);
    border-radius: 10px;
    outline: none;
    color: var(--ink);
    background: #fbfcfe;
    font: inherit;
    font-size: 1rem;
}

textarea:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(36, 99, 166, 0.14);
}

textarea::placeholder {
    color: #aaa9a4;
}

input[type="text"],
input[type="password"] {
    display: block;
    width: 100%;
    margin: 0 0 14px;
    padding: 14px 18px;
    border: 1px solid var(--line);
    border-radius: 10px;
    outline: none;
    color: var(--ink);
    background: #fbfcfe;
    font: inherit;
    font-size: 1rem;
}

input[type="text"]:focus,
input[type="password"]:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(36, 99, 166, 0.14);
}

input::placeholder {
    color: #aaa9a4;
}

.login-footer {
    margin-top: 10px;
}

.submit-button {
    border: 0;
    border-radius: 8px;
    padding: 12px 18px;
    color: #fff;
    background: var(--blue);
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    transition: background 160ms ease;
}

.submit-button:hover {
    background: var(--blue-dark);
}

.login-button {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 10;
    border: 0;
    border-radius: 8px;
    padding: 12px 18px;
    color: #fff;
    background: var(--blue);
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(24, 53, 78, 0.16);
    transition: background 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.login-button:hover {
    background: var(--blue-dark);
    box-shadow: 0 6px 16px rgba(24, 53, 78, 0.2);
    transform: translateY(-1px);
}

.register-button {
    position: fixed;
    top: 16px;
    right: 132px;
    z-index: 10;
    border: 0;
    border-radius: 8px;
    padding: 12px 18px;
    color: #fff;
    background: var(--muted);
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(24, 53, 78, 0.16);
    transition: background 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.register-button:hover {
    background: var(--blue-dark);
    box-shadow: 0 6px 16px rgba(24, 53, 78, 0.2);
    transform: translateY(-1px);
}

.status-message {
    min-height: 1.3em;
    margin: 13px 0 0;
    color: var(--green);
    font-size: 0.85rem;
}

.feed {
    padding-top: 40px;
}

.feed-heading {
    margin-bottom: 20px;
}

.live-indicator {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--muted);
    font-size: 0.8rem;
}

.live-indicator span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #46ad7e;
}

.post-list {
    display: grid;
    gap: 12px;
}

.post-card {
    display: flex;
    gap: 17px;
    padding: 20px;
    border-radius: 8px;
}

.avatar {
    display: grid;
    flex: 0 0 43px;
    width: 43px;
    height: 43px;
    place-items: center;
    border-radius: 50%;
    background: var(--light-blue);
    color: var(--blue-dark);
    font-size: 0.78rem;
    font-weight: 700;
}

.post-content {
    min-width: 0;
    flex: 1;
}

.post-meta {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-size: 0.83rem;
}

.post-meta span,
.post-meta time {
    color: var(--muted);
    font-size: 0.78rem;
}

.post-meta time {
    margin-left: auto;
}

.post-content p {
    margin: 8px 0 15px;
    font-size: 0.96rem;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.post-actions {
    display: flex;
    gap: 25px;
    color: var(--muted);
    font-size: 0.78rem;
}

.site-footer {
    padding: 45px 24px 28px;
    color: var(--muted);
    text-align: center;
    font-size: 0.75rem;
}

.site-footer span {
    padding: 0 5px;
    color: var(--blue);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 600px) {
    .site-header {
        padding: 20px 20px;
    }

    .page-shell {
        padding: 42px 16px 20px;
    }

    .composer-panel,
    .login-panel {
        padding: 22px 18px;
    }

    .composer-footer {
        align-items: flex-end;
    }

    .post-card {
        padding: 18px 16px;
    }

    .post-meta {
        flex-wrap: wrap;
        gap: 4px 7px;
    }

    .post-meta time {
        margin-left: auto;
    }
}