* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f0f2f5;
    color: #1a1a2e;
    min-height: 100vh;
}

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
    background: #1a1a2e;
    color: #fff;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-left { display: flex; align-items: center; gap: 0.6rem; }
.nav-logo { height: 32px; width: auto; }
.nav-brand { font-size: 1.25rem; font-weight: 700; }
.nav-right { display: flex; align-items: center; gap: 1rem; }
.nav-user { opacity: 0.7; font-size: 0.9rem; }
.nav-link { color: #94a3b8; text-decoration: none; font-size: 0.9rem; }
.nav-link:hover { color: #fff; }

/* ── Container ────────────────────────────────────────────── */
.container { max-width: 960px; margin: 2rem auto; padding: 0 1.5rem; }
.page-title { font-size: 1.5rem; margin-bottom: 1.5rem; }

/* ── Card Grid ────────────────────────────────────────────── */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}
.tool-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.75rem;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    transition: transform 0.15s, box-shadow 0.15s;
    position: relative;
}
.tool-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}
.tool-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.tool-name { font-size: 1.15rem; margin-bottom: 0.4rem; }
.tool-desc { font-size: 0.9rem; color: #64748b; line-height: 1.4; }
.tool-badge {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.2rem 0.6rem;
    background: #fef3c7;
    color: #92400e;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
}

/* ── Login Page ───────────────────────────────────────────── */
.login-body {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}
.login-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}
.login-logo {
    text-align: center;
    margin-bottom: 0.5rem;
}
.login-logo h1 {
    font-size: 1.75rem;
    margin-top: 0.5rem;
    color: #1a1a2e;
}
.logo-img {
    height: 64px;
    width: auto;
}
.login-subtitle {
    text-align: center;
    color: #64748b;
    margin-bottom: 1.5rem;
}
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
    font-size: 0.9rem;
}
.form-group input {
    width: 100%;
    padding: 0.65rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.15s;
}
.form-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.btn {
    display: block;
    width: 100%;
    padding: 0.7rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
}
.btn-primary {
    background: #1a1a2e;
    color: #fff;
}
.btn-primary:hover {
    background: #16213e;
}

/* ── Alerts ───────────────────────────────────────────────── */
.alert {
    padding: 0.65rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.alert-error {
    background: #fee2e2;
    color: #991b1b;
}