@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&family=Poppins:wght@500;700&display=swap');

:root{
    --grad-1: #6c2bd9;
    --grad-2: #b83280;
    --grad-3: #ff6b00;
    --grad-4: #2c89d9;
    --card: rgba(255,255,255,0.08);
    --card-stroke: rgba(255,255,255,0.14);
    --text-main: #e9eefb;
    --muted: #cbd5e1;
    --shadow: 0 18px 55px rgba(0,0,0,0.25);
}

*{ box-sizing: border-box; }

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body{
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(120deg, var(--grad-1), var(--grad-2), var(--grad-3), var(--grad-4));
    background-size: 400% 400%;
    animation: gradientMove 16s ease infinite;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 18px;
    color: var(--text-main);
    font-family: 'Inter', 'Poppins', sans-serif;
}

form{
    width: 100%;
    max-width: 520px;
    background: var(--card);
    border: 1px solid var(--card-stroke);
    border-radius: 16px;
    padding: 22px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

#title{
    text-align: center;
    font-size: 42px;
    margin: 0 0 18px;
    letter-spacing: -0.01em;
}

.form-field{
    margin-bottom: 14px;
}
#label{
    display: block;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 6px;
}

#name, #pin{
    width: 100%;
    padding: 14px 14px;
    border-radius: 12px;
    border: 1px solid var(--card-stroke);
    background: rgba(255,255,255,0.12);
    color: var(--text-main);
    font-size: 18px;
    outline: none;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.12);
}
#name:focus, #pin:focus{
    border-color: rgba(255,255,255,0.45);
}

#joinButton{
    width: 100%;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    padding: 14px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 700;
    box-shadow: var(--shadow);
    transition: transform 0.18s ease, filter 0.18s ease;
}
#joinButton:hover{ transform: translateY(-2px); filter: brightness(1.05); }
#joinButton:disabled{
    opacity: 0.65;
    cursor: not-allowed;
    filter: saturate(0.6);
    transform: none;
}

#icon-picker{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(54px, 1fr));
    gap: 8px;
    max-width: 420px;
}
#icon-picker button{
    font-size: 26px;
    padding: 10px;
    border: 2px solid transparent;
    border-radius: 12px;
    background: rgba(255,255,255,0.08);
    color: var(--text-main);
    cursor: pointer;
    transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}
#icon-picker button:hover{ transform: translateY(-2px); background: rgba(255,255,255,0.12); }
#icon-picker button.selected{
    border-color: #22c55e;
    background: rgba(34,197,94,0.12);
}
#icon-preview{
    font-size: 30px;
    text-align: right;
    color: var(--text-main);
    margin-top: 6px;
}

#host{
    color: var(--text-main);
    text-decoration: none;
    font-weight: 700;
}
#host:hover{
    text-decoration:underline;
}

#lang-switcher{
    position: fixed;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 6px;
}
#lang-switcher button{
    background: var(--card);
    border: 1px solid var(--card-stroke);
    color: var(--muted);
    padding: 6px 10px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    box-shadow: var(--shadow);
}
#lang-switcher button.active{
    color: var(--text-main);
    border-color: rgba(255,255,255,0.35);
}

center{
    margin-top: 12px;
    display: block;
}

body.modal-open{
    overflow: hidden;
}

.hidden{
    display: none !important;
}

.pin-modal{
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.12), rgba(12,16,35,0.85)),
                radial-gradient(circle at 80% 80%, rgba(255,255,255,0.08), rgba(12,16,35,0.85));
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    z-index: 20;
}
.pin-modal.hidden{
    display: none;
}
.pin-modal__card{
    width: 100%;
    max-width: 420px;
    background: linear-gradient(145deg, rgba(108,43,217,0.18), rgba(184,50,128,0.18), rgba(44,137,217,0.18));
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 18px;
    padding: 22px;
    box-shadow: var(--shadow);
}
.pin-modal__card h2{
    margin: 0 0 8px;
    font-size: 24px;
    letter-spacing: -0.01em;
}
.pin-modal__card p{
    margin: 0 0 14px;
    color: var(--muted);
}
.pin-modal__form label{
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-main);
}
.pin-modal__controls{
    display: flex;
    flex-direction: column;
    gap: 10px;
}
#pinModalInput{
    flex: 1;
    padding: 12px 12px;
    border-radius: 12px;
    border: 1px solid var(--card-stroke);
    background: rgba(255,255,255,0.12);
    color: var(--text-main);
    font-size: 18px;
}
#pinModalSubmit{
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    border: none;
    padding: 12px 16px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: transform 0.18s ease, filter 0.18s ease;
    width: 100%;
    margin-top: 8px;
}
#pinModalSubmit:hover{ transform: translateY(-2px); filter: brightness(1.03); }
#pinModalSubmit.is-loading{
    opacity: 0.7;
    cursor: wait;
    transform: none;
}
.pin-modal__error{
    min-height: 20px;
    margin: 8px 0 0;
    color: #fca5a5;
    font-weight: 600;
}

.pin-display{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    border: 1px solid var(--card-stroke);
    padding: 10px 12px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin: 0 0 12px;
}
.pin-display.hidden{
    display: none;
}
.pin-display__label{
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--muted);
}
.pin-display__value{
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
}

.install-card{
    margin-top: 10px;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--card-stroke);
    border-radius: 12px;
    padding: 12px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: space-between;
}
.install-card p{
    margin: 0;
    font-weight: 700;
}
.install-card small{
    color: var(--muted);
}
.install-card__actions{
    display: flex;
    gap: 8px;
}
.install-card__btn{
    background: linear-gradient(135deg, #6c2bd9, #b83280);
    color: white;
    border: none;
    padding: 10px 12px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow);
}
.install-card__btn:disabled{
    opacity: 0.7;
    cursor: wait;
}
.install-card__link{
    background: transparent;
    color: var(--muted);
    border: none;
    padding: 0 6px;
    cursor: pointer;
    text-decoration: underline;
}