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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #0b0b0b;
    color: #e5e5e5;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
}

/* ===== MAIN WRAPPER (flex) ===== */
.app-wrapper {
    display: flex;
    max-width: 1400px;
    width: 100%;
    background: #141414;
    border-radius: 20px;
    border: 1px solid #2a2a2a;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
    overflow: hidden;
    min-height: 85vh;
}

/* ===== SIDEBAR (left) ===== */
.sidebar {
    width: 270px;
    background: #111111;
    padding: 30px 0 20px 0;
    border-right: 1px solid #2a2a2a;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 0 25px 25px 25px;
    border-bottom: 1px solid #222;
    margin-bottom: 20px;
}

.sidebar-brand h1 {
    font-size: 1.6rem;
    font-weight: 400;
    color: #c0c0c0;
    letter-spacing: 1px;
}

.sidebar-brand h1 span {
    color: #7aa9ff;
}

.sidebar-brand .sub {
    font-size: 0.75rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 4px;
}

.sidebar-nav {
    flex: 1;
    padding: 0 12px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: 10px;
    color: #aaa;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s ease;
    margin-bottom: 4px;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background: #1e1e1e;
    color: #fff;
    border-left-color: #7aa9ff;
}

.sidebar-nav a.active {
    background: #1a1a1a;
    color: #ffffff;
    border-left-color: #7aa9ff;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.sidebar-nav a .icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 20px 25px 0 25px;
    border-top: 1px solid #222;
    margin-top: 20px;
    font-size: 0.7rem;
    color: #555;
    text-align: center;
}

/* ===== MAIN CONTENT (right) ===== */
.main-content {
    flex: 1;
    padding: 40px 50px 40px 50px;
    overflow-y: auto;
    background: #141414;
}

.main-content h2 {
    font-size: 2rem;
    font-weight: 400;
    color: #f0f0f0;
    margin-bottom: 20px;
    border-bottom: 1px solid #2a2a2a;
    padding-bottom: 12px;
}

.main-content h3 {
    font-size: 1.4rem;
    font-weight: 400;
    color: #d0d0d0;
    margin-top: 30px;
    margin-bottom: 12px;
}

.main-content h4 {
    font-size: 1.1rem;
    font-weight: 400;
    color: #b0b0b0;
    margin-top: 20px;
    margin-bottom: 8px;
}

.main-content p {
    margin-bottom: 18px;
    color: #c5c5c5;
}

.main-content ul, .main-content ol {
    margin-left: 25px;
    margin-bottom: 20px;
    color: #c5c5c5;
}

.main-content li {
    margin-bottom: 6px;
}

.main-content a {
    color: #7aa9ff;
    text-decoration: none;
    border-bottom: 1px dotted #3a5a8a;
}

.main-content a:hover {
    color: #a8c8ff;
    border-bottom: 1px solid #7aa9ff;
}

/* ===== BOXES ===== */
.warning-box, .info-box {
    background: #1a1a1a;
    padding: 18px 22px;
    margin: 25px 0;
    border-radius: 8px;
    border-left: 5px solid;
}

.warning-box {
    border-left-color: #ff6b6b;
}

.warning-box strong {
    color: #ff8a8a;
}

.info-box {
    border-left-color: #7aa9ff;
}

.info-box strong {
    color: #7aa9ff;
}

.mirror-link {
    background: #0d0d0d;
    padding: 12px 16px;
    border-radius: 6px;
    border: 1px solid #2a2a2a;
    font-family: monospace;
    word-break: break-all;
    color: #7aa9ff;
    margin: 10px 0;
}

code {
    background: #1a1a1a;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9rem;
    color: #c5c5c5;
    border: 1px solid #2a2a2a;
}

/* ===== DISCLAIMER ===== */
.disclaimer {
    font-size: 0.8rem;
    color: #666;
    border-top: 1px solid #2a2a2a;
    margin-top: 40px;
    padding-top: 20px;
    text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 820px) {
    .app-wrapper {
        flex-direction: column;
        border-radius: 16px;
    }
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #2a2a2a;
        padding: 15px 0;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
    }
    .sidebar-brand {
        padding: 0 20px;
        border-bottom: none;
        margin-bottom: 0;
    }
    .sidebar-brand h1 {
        font-size: 1.3rem;
    }
    .sidebar-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 4px;
        padding: 0 15px;
    }
    .sidebar-nav a {
        padding: 6px 12px;
        font-size: 0.8rem;
        border-left: none;
        border-bottom: 2px solid transparent;
        border-radius: 6px;
    }
    .sidebar-nav a:hover {
        border-left-color: transparent;
        border-bottom-color: #7aa9ff;
    }
    .sidebar-nav a.active {
        border-left-color: transparent;
        border-bottom-color: #7aa9ff;
        box-shadow: none;
    }
    .sidebar-nav a .icon {
        font-size: 1rem;
        width: 20px;
    }
    .sidebar-footer {
        display: none;
    }
    .main-content {
        padding: 25px 20px;
    }
}

@media (max-width: 500px) {
    .sidebar-nav a {
        font-size: 0.7rem;
        padding: 4px 8px;
    }
    .sidebar-nav a .icon {
        font-size: 0.8rem;
        width: 16px;
    }
    .main-content h2 {
        font-size: 1.5rem;
    }
}