:root {
    --bg-start: #0f172a;
    --bg-mid: #13233f;
    --bg-end: #1e1b4b;
    --ink: #eaf2ff;
    --ink-soft: #bfd0ea;
    --muted: #90a6c7;
    --accent: #22c1ee;
    --accent-2: #3ee3b9;
    --danger: #ef6a7a;
    --ok: #65d17e;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.25);
    --glass-strong: rgba(255, 255, 255, 0.18);
    --shadow: 0 18px 40px rgba(5, 10, 25, 0.4);
    --radius: 18px;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(1000px 500px at 8% 0%, rgba(34, 193, 238, 0.28), transparent 60%),
        radial-gradient(900px 480px at 92% 8%, rgba(62, 227, 185, 0.24), transparent 62%),
        linear-gradient(145deg, var(--bg-start), var(--bg-mid) 45%, var(--bg-end));
    padding: clamp(14px, 2.2vw, 26px);
}

a {
    color: inherit;
}

.page-wrap,
.landing-wrap,
.projector-wrap {
    width: min(1180px, 100%);
    margin: 0 auto;
}

.page-head,
.projector-topbar {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: var(--shadow);
    padding: clamp(14px, 2vw, 22px);
}

.page-head h1,
.landing-wrap h1 {
    margin: 0;
    font-weight: 700;
    letter-spacing: 0.2px;
    font-size: clamp(1.65rem, 3.4vw, 2.75rem);
}

.page-head p,
.landing-wrap p {
    margin: 0.65rem 0 0;
    color: var(--ink-soft);
}

.page-head nav,
.projector-topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem;
    margin-top: 1rem;
}

.page-head nav a,
.projector-topbar a {
    text-decoration: none;
    font-size: 0.9rem;
    color: #f4fbff;
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    padding: 0.44rem 0.9rem;
    transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.page-head nav a:hover,
.projector-topbar a:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.36);
}

.panel,
.card-link,
.projector-question-box,
.projector-buzzer-box {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
}

.panel {
    margin-top: 1rem;
    padding: clamp(14px, 2vw, 22px);
}

.admin-login-panel {
    max-width: 500px;
}

.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(10px, 1.6vw, 18px);
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

textarea,
input {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 12px;
    padding: 0.78rem 0.9rem;
    background: rgba(12, 26, 53, 0.45);
    color: #f3f8ff;
    font-size: 0.98rem;
    font-family: inherit;
    outline: none;
}

textarea::placeholder,
input::placeholder {
    color: rgba(210, 226, 248, 0.66);
}

textarea:focus,
input:focus {
    border-color: rgba(34, 193, 238, 0.85);
    box-shadow: 0 0 0 3px rgba(34, 193, 238, 0.2);
}

button {
    border: 0;
    border-radius: 12px;
    padding: 0.68rem 1rem;
    font-size: 0.92rem;
    font-weight: 600;
    color: #062530;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 12px 24px rgba(6, 20, 44, 0.34);
    cursor: pointer;
    transition: transform 140ms ease, filter 160ms ease;
}

button:hover {
    transform: translateY(-1px);
    filter: brightness(1.04);
}

button.warn {
    color: #fff;
    background: linear-gradient(135deg, #f26775, #d84a5a);
}

button.tiny {
    font-size: 0.8rem;
    padding: 0.42rem 0.78rem;
}

button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
}

.message {
    margin-top: 0.6rem;
    color: var(--ok);
    min-height: 1.2rem;
}

.message.error {
    color: #ff9daa;
}

.display-text {
    font-size: clamp(1rem, 2vw, 1.2rem);
    line-height: 1.55;
}

.display-buzzer {
    font-size: 0.97rem;
    color: var(--ink-soft);
}

.buzz-list,
.projector-buzz-list {
    margin-top: 0.85rem;
    padding: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.23);
    border-radius: 12px;
    background: var(--glass-strong);
}

.buzz-list h3,
.projector-buzz-list h3 {
    margin: 0 0 0.45rem;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #d5e8ff;
}

.buzz-list ol,
.projector-buzz-list ol {
    margin: 0;
    padding-left: 1.1rem;
    display: grid;
    gap: 0.28rem;
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.question-list {
    max-height: 55vh;
    overflow: auto;
    padding-right: 0.3rem;
}

.question-item {
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.07);
    padding: 0.75rem;
    margin-bottom: 0.62rem;
    display: flex;
    flex-direction: column;
    gap: 0.62rem;
}

.question-item p {
    margin: 0;
    color: #eff7ff;
}

.question-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.question-actions button {
    font-size: 0.84rem;
    padding: 0.44rem 0.74rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-top: 1.2rem;
}

.card-link {
    text-decoration: none;
    padding: clamp(14px, 1.7vw, 20px);
    transition: transform 170ms ease, border-color 170ms ease, background-color 170ms ease;
}

.card-link:hover {
    transform: translateY(-3px);
    border-color: rgba(34, 193, 238, 0.6);
    background: rgba(255, 255, 255, 0.15);
}

.card-link h2 {
    margin: 0;
    font-size: 1.15rem;
}

.card-link p {
    margin: 0.55rem 0 0;
    color: var(--ink-soft);
}

.team-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.buzz-btn {
    width: 100%;
    margin-top: 0.9rem;
    padding: clamp(0.95rem, 2.2vw, 1.2rem);
    font-size: clamp(1.35rem, 4.2vw, 2.55rem);
    font-weight: 800;
    letter-spacing: 1.2px;
    color: #032f26;
}

.projector-body {
    color: #f8fcff;
    background:
        radial-gradient(900px 460px at 8% 0%, rgba(34, 193, 238, 0.2), transparent 58%),
        radial-gradient(820px 460px at 92% 8%, rgba(62, 227, 185, 0.16), transparent 58%),
        linear-gradient(150deg, #060b17, #091328 48%, #0d1130);
}

.projector-wrap {
    position: relative;
    min-height: calc(100vh - 2 * clamp(14px, 2.2vw, 26px));
    display: grid;
    grid-template-rows: 1fr auto;
    gap: 0.8rem;
}

.projector-close {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 2;
    text-decoration: none;
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: #e8f4ff;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.32);
    background: rgba(8, 21, 44, 0.45);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.projector-question-box,
.projector-buzzer-box {
    padding: clamp(18px, 2.4vw, 26px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.34);
}

.projector-question-box h1 {
    margin: 0;
    font-size: clamp(2.2rem, 6.2vw, 5.3rem);
    line-height: 1.1;
    color: #ffffff;
    text-shadow: 0 3px 14px rgba(0, 0, 0, 0.42);
}

.projector-buzzer-box h2 {
    margin: 0;
    font-size: clamp(1.15rem, 2.3vw, 1.8rem);
    color: #ffffff;
}

.buzz-meta {
    margin: 0 0 0.2rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.9px;
    color: #dff0ff;
}

.projector-buzzer-box {
    justify-self: end;
    width: min(430px, 100%);
    padding: 0.85rem 1rem;
}

.projector-buzz-list {
    margin-top: 0.45rem;
    padding: 0.5rem 0.65rem;
    font-size: 0.86rem;
    background: rgba(4, 12, 28, 0.5);
    border-color: rgba(255, 255, 255, 0.38);
    color: #f5fbff;
}

.projector-buzz-list h3 {
    font-size: 0.68rem;
    margin-bottom: 0.28rem;
    color: #e8f5ff;
}

.projector-buzz-list ol {
    gap: 0.14rem;
}

.active-buzz {
    border-color: rgba(108, 255, 210, 0.96);
    box-shadow: 0 0 0 1px rgba(108, 255, 210, 0.78), 0 22px 44px rgba(0, 16, 14, 0.56);
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel,
.card-link,
.projector-question-box,
.projector-buzzer-box,
.page-head,
.projector-topbar {
    animation: fadeUp 300ms ease both;
}

@media (max-width: 1024px) {
    .split {
        grid-template-columns: 1fr;
    }

    .projector-wrap {
        grid-template-rows: 1fr auto;
    }
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .page-head,
    .projector-topbar,
    .panel,
    .projector-question-box,
    .projector-buzzer-box,
    .card-link {
        border-radius: 14px;
    }

    .projector-topbar span {
        margin-left: 0;
        width: 100%;
    }

    .projector-buzzer-box {
        width: 100%;
        justify-self: stretch;
    }

    .question-list {
        max-height: none;
    }
}

@media (max-width: 480px) {
    .page-head nav a,
    .projector-topbar a {
        font-size: 0.82rem;
        padding: 0.38rem 0.76rem;
    }

    .question-actions button,
    button {
        width: 100%;
    }

    .btn-row button {
        width: 100%;
    }
}