/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2130;
    --bg-hover: #252838;
    --border: #2a2d3e;
    --text-primary: #f1f3f9;
    --text-secondary: #8b8fa3;
    --text-muted: #5c6078;
    --accent-blue: #4f8cff;
    --accent-green: #34d399;
    --accent-purple: #a78bfa;
    --accent-orange: #fb923c;
    --accent-pink: #f472b6;
    --accent-teal: #2dd4bf;
    --accent-red: #f87171;
    --accent-gold: #FFD966;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
    --transition: 0.2s ease;
}

html { font-size: 14px; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

.hidden { display: none !important; }

/* ===== LOGIN SCREEN ===== */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(79, 140, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(167, 139, 250, 0.06) 0%, transparent 50%),
        var(--bg-primary);
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    width: 420px;
    max-width: 90vw;
    box-shadow: var(--shadow-lg);
}

.login-logo {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo-img {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    margin-bottom: 16px;
    object-fit: cover;
}

.login-logo h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--text-primary);
}

.login-logo h1 span {
    color: var(--accent-blue);
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 6px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: border var(--transition);
}

.form-group input:focus {
    border-color: var(--accent-blue);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.login-error {
    color: var(--accent-red);
    font-size: 0.85rem;
    margin-bottom: 12px;
    min-height: 20px;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--accent-blue);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: -0.01em;
}

.btn-login:hover {
    background: #3d7ae8;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(79, 140, 255, 0.3);
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.login-footer {
    text-align: center;
    margin-top: 32px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ===== HUB HEADER ===== */
.hub-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 40px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.hub-header-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.hub-logo-img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: cover;
}

.hub-header-left h1 {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.hub-header-left h1 span {
    color: var(--accent-blue);
}

.hub-header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: #fff;
}

#userName {
    font-weight: 600;
    font-size: 0.95rem;
}

.btn-logout {
    padding: 8px 20px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-logout:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* ===== HUB CONTENT ===== */
.hub-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 48px 32px;
}

.hub-welcome {
    margin-bottom: 40px;
}

.hub-welcome h2 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.hub-welcome h2 span {
    color: var(--accent-blue);
}

.hub-welcome-sub {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-top: 6px;
}

/* ===== PANELS GRID ===== */
.panels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.panel-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.panel-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--panel-color);
    opacity: 0.7;
    transition: opacity var(--transition);
}

.panel-card:hover {
    border-color: var(--panel-color);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.panel-card:hover::before {
    opacity: 1;
}

.panel-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    background: var(--panel-color-bg);
    color: var(--panel-color);
}

.panel-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.panel-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.panel-badge {
    display: inline-block;
    margin-top: 14px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.panel-badge.active {
    background: rgba(52, 211, 153, 0.15);
    color: var(--accent-green);
}

.panel-badge.soon {
    background: rgba(251, 146, 60, 0.15);
    color: var(--accent-orange);
}

.panel-card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.panel-card.disabled:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hub-header { padding: 16px 20px; }
    .hub-content { padding: 32px 16px; }
    .panels-grid { grid-template-columns: 1fr; }
    .login-card { padding: 36px 28px; }
    .hub-welcome h2 { font-size: 1.5rem; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }