:root {
    --page-bg: #08111f;
    --terminal-bg: #0b1220;
    --terminal-panel: #111c2e;
    --terminal-border: #29364a;
    --terminal-text: #dce7f5;
    --muted: #8da1ba;
    --green: #55e6a5;
    --red: #ff6b7a;
    --amber: #ffc857;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    color: #e7eef8;
    background:
        radial-gradient(circle at 20% 10%, rgba(36, 100, 166, 0.24), transparent 32rem),
        linear-gradient(145deg, #060b14 0%, var(--page-bg) 60%, #0c1727 100%);
    font-family: "Segoe UI", sans-serif;
}

.page-shell {
    width: min(920px, 100%);
}

.eyebrow {
    color: var(--green);
    font-family: "Courier New", monospace;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.terminal {
    overflow: hidden;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    border-radius: 16px;
    box-shadow: 0 26px 80px rgba(0, 0, 0, 0.42);
}

.terminal-bar {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0.75rem 1rem;
    background: #111a29;
    border-bottom: 1px solid var(--terminal-border);
}

.window-dots {
    display: flex;
    gap: 0.45rem;
}

.window-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.window-dot:nth-child(1) {
    background: #ff5f57;
}

.window-dot:nth-child(2) {
    background: #febc2e;
}

.window-dot:nth-child(3) {
    background: #28c840;
}

.terminal-title {
    margin: 0 auto;
    color: var(--muted);
    font: 0.82rem "Courier New", monospace;
    transform: translateX(-24px);
}

.terminal-body {
    padding: 1.4rem;
    color: var(--terminal-text);
}

.terminal-label {
    color: var(--muted);
    font: 0.82rem "Courier New", monospace;
}

.terminal-input {
    color: #fff;
    caret-color: var(--green);
    background: #08111d;
    border: 1px solid #40516a;
    font-family: "Courier New", monospace;
}

.terminal-input:focus {
    color: #fff;
    background: #08111d;
    border-color: var(--green);
    box-shadow: 0 0 0 0.2rem rgba(85, 230, 165, 0.12);
}

.terminal-input::placeholder {
    color: #687b93;
}

.run-button {
    color: #06140e;
    background: var(--green);
    border: 0;
    font-weight: 700;
}

.run-button:hover,
.run-button:focus {
    color: #06140e;
    background: #79edba;
}

.login-message {
    min-height: 1.5rem;
    font-family: "Courier New", monospace;
    font-weight: 700;
}

.login-message.success {
    color: var(--green);
}

.login-message.error {
    color: var(--red);
}

.challenge-panel {
    padding: 1.25rem;
    color: var(--terminal-text);
    background: var(--terminal-panel);
    border-top: 1px solid var(--terminal-border);
}

.state-key {
    color: var(--green);
    font-family: "Courier New", monospace;
}

.challenge-panel code,
.info-card code,
.hint-dropdown code {
    color: var(--amber);
    background: #08111d;
    border: 1px solid var(--terminal-border);
    border-radius: 5px;
    padding: 0.12rem 0.35rem;
}

#accessValue.unlocked {
    color: var(--green);
    font-weight: 700;
}

.info-card,
.hint-dropdown {
    color: #c9d6e6;
    background: rgba(17, 28, 46, 0.82);
    border: 1px solid var(--terminal-border);
    border-radius: 12px;
}

.hint-dropdown {
    padding: 0.9rem 1rem;
}

.hint-dropdown summary {
    color: var(--amber);
    cursor: pointer;
    font-weight: 700;
}

.solution-link {
    color: #8abfff;
    font-weight: 600;
    text-decoration: none;
}

.solution-link:hover {
    color: #b6d7ff;
    text-decoration: underline;
}

.brand-footer {
    padding-top: 1.25rem;
    border-top: 1px solid var(--terminal-border);
}

.brand-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.25rem;
}

.brand-logo {
    display: block;
    object-fit: contain;
}

.brand-logo-duca {
    width: 72px;
    height: 72px;
}

.brand-logo-dsec {
    width: 130px;
    height: 72px;
}

.success-modal {
    color: var(--terminal-text);
    background: var(--terminal-panel);
    border: 1px solid var(--terminal-border);
}

.success-modal .modal-header {
    border-bottom-color: var(--terminal-border);
}

.success-modal .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.success-icon {
    display: grid;
    width: 64px;
    height: 64px;
    margin: 0 auto;
    place-items: center;
    color: #06140e;
    background: var(--green);
    border-radius: 50%;
    font-size: 1.75rem;
    font-weight: 800;
}

@media (max-width: 720px) {
    .terminal-body {
        padding: 1rem;
    }
}