*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
    --muted: #94a3b8;
    --border: #e2e8f0;
    --danger: #ef4444;
    --success: #22c55e;
    --radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}

.navbar .brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.navbar a {
    color: var(--text);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: .9rem;
}

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

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
    width: 100%;
}

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    border-radius: var(--radius);
    color: #fff;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: .5rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.1rem;
    opacity: .9;
    margin-bottom: 1.5rem;
}

/* Buttons */
.btn-login {
    display: inline-block;
    background: #fff;
    color: var(--primary);
    padding: .7rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: transform .15s, box-shadow .15s;
}

.btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
}

.btn-logout {
    display: inline-block;
    background: transparent;
    color: #fff;
    padding: .5rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    border: 2px solid rgba(255,255,255,.4);
    margin-left: .5rem;
    font-size: .9rem;
}

.btn-new {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: .5rem 1.2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: .9rem;
}

.btn-del {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: .85rem;
    margin-left: .5rem;
}

/* Articles */
.articles h2 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.article-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.2rem 1.5rem;
    margin-bottom: .8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: box-shadow .15s;
}

.article-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,.06);
}

.article-card h3 { font-size: 1rem; }
.article-card h3 a { color: var(--text); text-decoration: none; }
.article-card h3 a:hover { color: var(--primary); }
.article-card .date { color: var(--muted); font-size: .85rem; white-space: nowrap; }

.empty { color: var(--muted); text-align: center; padding: 2rem; }

/* Article detail */
.article-detail {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.article-detail h1 { font-size: 1.8rem; margin-bottom: .5rem; }
.article-detail .date { color: var(--muted); font-size: .85rem; display: block; margin-bottom: 1.5rem; }
.article-detail .content { line-height: 1.8; }
.back-link { display: inline-block; margin-top: 1.5rem; color: var(--primary); text-decoration: none; }

/* Login */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.login-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 4px 24px rgba(0,0,0,.06);
}

.login-box h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: .9rem;
    font-weight: 500;
    margin-bottom: .3rem;
    color: var(--text);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-input {
    width: 100%;
    padding: .65rem .8rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: .95rem;
    outline: none;
    transition: border-color .15s;
}

.form-group input:focus,
.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}

textarea.form-input { resize: vertical; font-family: inherit; }

.form-actions { display: flex; gap: .8rem; margin-top: 1rem; }
.form-actions .btn-logout {
    color: var(--text);
    border-color: var(--border);
    text-align: center;
    padding: .7rem 2rem;
}

.error-msg {
    color: var(--danger);
    font-size: .85rem;
    background: #fef2f2;
    padding: .6rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-align: center;
}

/* Admin */
.admin-panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.admin-header h2 { font-size: 1.3rem; }

.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { text-align: left; padding: .7rem .5rem; border-bottom: 2px solid var(--border); font-size: .85rem; color: var(--muted); text-transform: uppercase; }
.admin-table td { padding: .7rem .5rem; border-bottom: 1px solid var(--border); font-size: .9rem; }
.admin-table a { color: var(--primary); text-decoration: none; }

.badge {
    display: inline-block;
    padding: .15rem .6rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
}

.badge.published { background: #dcfce7; color: #16a34a; }
.badge.draft { background: #fef3c7; color: #d97706; }

/* Footer */
.footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--muted);
    font-size: .85rem;
    border-top: 1px solid var(--border);
}