:root {
    --gold: #22C55E;
    --gold-light: #4ADE80;
    --gold-dark: #15803D;
    --purple: #7C3AED;
    --purple-light: #A78BFA;
    --bg: #05080a;
    --success: #00E676;
    --success-dark: #00C853;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    min-height: 100vh;
    background: var(--bg);
    font-family: 'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
    isolation: isolate;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-color: var(--bg);
        background-image: url('../img/rich_auth_bg.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    transform: scale(1.05);
    transform-origin: center center;
    }

body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background:
        radial-gradient(ellipse 90% 70% at 50% 105%, rgba(34, 197, 94, 0.14), transparent 58%),
        radial-gradient(ellipse 65% 55% at 92% 8%, rgba(124, 58, 237, 0.22), transparent 48%),
        linear-gradient(168deg, rgba(6, 6, 12, 0.91) 0%, rgba(10, 8, 18, 0.62) 45%, rgba(8, 6, 16, 0.93) 100%);
}

/* Statik arka plan — ağır blur / parçacık / ken-burns kaldırıldı (GPU dostu) */
.bg-glow,
.particles {
    display: none !important;
}

/* ═══ LOGIN CARD ═══ */
.login-wrapper {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: linear-gradient(165deg, rgba(22,22,34,0.94), rgba(12,12,20,0.96));
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid rgba(34,197,94,0.38);
    border-radius: 24px;
    padding: 45px 38px;
    box-shadow:
        0 24px 70px rgba(0,0,0,0.55),
        0 0 0 1px rgba(255,255,255,0.04) inset,
        0 1px 0 rgba(255,255,255,0.07) inset;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.logo-area {
    text-align: center;
    margin-bottom: 35px;
}

.logo-box {
    position: relative;
    width: 110px;
    height: 110px;
    margin: 0 auto 18px;
}

.logo-ring {
    position: absolute;
    inset: -3px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--gold), var(--purple-light), var(--gold-dark));
    animation: none;
}

.logo-inner {
    position: absolute;
    inset: 2px;
    border-radius: 21px;
    background: var(--bg);
}

.logo-img {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 20px;
    overflow: hidden;
    border: 2px solid var(--gold);
}
.logo-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.brand-name {
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 28px;
    font-weight: 800;
    color: var(--gold);
    letter-spacing: 3px;
    text-shadow: 0 0 20px rgba(34,197,94,0.3);
}

.brand-sub {
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 9px;
    color: var(--purple-light);
    letter-spacing: 6px;
    margin-top: 5px;
}

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

.form-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 8px;
}

.input-box { position: relative; }

.input-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gold);
    font-size: 17px;
    opacity: 0.6;
}

.form-input {
    width: 100%;
    padding: 16px 18px 16px 48px;
    background: rgba(0,0,0,0.38);
    border: 1px solid rgba(34,197,94,0.28);
    border-radius: 12px;
    color: #fff;
    font-size: 15px;
    font-family: 'Montserrat', system-ui, sans-serif;
    transition: all 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 20px rgba(34,197,94,0.15);
}

.form-input::placeholder { color: rgba(255,255,255,0.3); }

.pin-box-wrap { margin-bottom: 8px; }
.pin-box-row {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 14px;
}
.pin-box {
    width: 44px;
    height: 52px;
    text-align: center;
    font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    background: rgba(0,0,0,0.38);
    border: 1px solid rgba(34,197,94,0.35);
    border-radius: 12px;
    transition: border-color 0.2s, box-shadow 0.2s;
    padding: 0;
    -moz-appearance: textfield;
}
.pin-box::-webkit-outer-spin-button,
.pin-box::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.pin-box:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 16px rgba(34,197,94,0.2);
}
.pin-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 6px;
    background: rgba(0,0,0,0.25);
    border: 1px solid rgba(34,197,94,0.22);
    border-radius: 10px;
    color: rgba(255,255,255,0.75);
    font-size: 13px;
    font-family: 'Montserrat', system-ui, sans-serif;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}
.pin-toggle-btn:hover {
    color: var(--gold-light);
    border-color: rgba(34,197,94,0.45);
}
.pin-toggle-btn i { color: var(--gold); font-size: 16px; }

.alert {
    padding: 12px 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(220,53,69,0.15);
    border: 1px solid rgba(220,53,69,0.3);
    color: #ff6b7a;
}

.btn-login {
    width: 100%;
    padding: 17px;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    border: none;
    border-radius: 12px;
    color: #000;
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.login-card--device {
    padding-top: 38px;
}
.login-card--device .logo-area {
    margin-bottom: 26px;
}
.login-card--device .logo-box {
    width: 72px;
    height: 72px;
    margin-bottom: 12px;
}
.login-card--device .brand-name {
    font-size: 22px;
    letter-spacing: 2px;
}
.device-account-card {
    position: relative;
    margin-bottom: 8px;
    border-radius: 18px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(244, 208, 63, 0.55), rgba(124, 58, 237, 0.45), rgba(34, 197, 94, 0.2));
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.35),
        0 0 24px rgba(34, 197, 94, 0.08);
}
.device-account-inner {
    position: relative;
    border-radius: 17px;
    padding: 16px 16px 16px 14px;
    background: linear-gradient(145deg, rgba(28, 26, 40, 0.92), rgba(14, 13, 22, 0.96));
    overflow: hidden;
}
.device-account-inner::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.12), transparent 70%);
    pointer-events: none;
}
.device-account-row {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 14px;
}
.device-account-avatar-wrap {
    position: relative;
    flex-shrink: 0;
    width: 52px;
    height: 52px;
}
.device-account-avatar-ring {
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background: conic-gradient(from 200deg, var(--gold-light), var(--purple-light), var(--gold-dark), var(--gold-light));
    opacity: 0.85;
}
.device-account-avatar {
    position: relative;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(10, 10, 15, 0.9);
    display: block;
    background: rgba(0, 0, 0, 0.4);
}
.device-account-avatar-fallback {
    position: relative;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, rgba(34, 197, 94, 0.2), rgba(124, 58, 237, 0.5));
    border: 2px solid rgba(10, 10, 15, 0.9);
    color: var(--gold-light);
    font-size: 26px;
}
.device-account-status {
    position: absolute;
    right: -2px;
    bottom: -2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--success), var(--success-dark));
    border: 2px solid rgba(14, 13, 22, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #041208;
    font-size: 11px;
    box-shadow: 0 2px 8px rgba(0, 230, 118, 0.45);
}
.device-account-meta {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.device-account-eyebrow {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.42);
}
.device-account-name {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: #fff;
    background: linear-gradient(90deg, #fff 0%, var(--gold-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    word-break: break-all;
}
.device-account-switch {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.72);
    text-decoration: none;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}
.device-account-switch i {
    font-size: 14px;
    color: var(--gold);
    opacity: 0.9;
}
.device-account-switch:hover {
    color: #fff;
    background: rgba(34, 197, 94, 0.12);
    border-color: rgba(34, 197, 94, 0.35);
    transform: translateY(-1px);
}
.device-account-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 18px 4px;
    font-size: 12px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.48);
}
.device-account-hint i {
    color: var(--gold);
    font-size: 14px;
    opacity: 0.75;
}
.login-card--device .form-group {
    margin-bottom: 18px;
}
.login-card--device .form-input {
    padding-top: 17px;
    padding-bottom: 17px;
    font-size: 16px;
}
.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(34,197,94,0.4);
}

.form-footer {
    text-align: center;
    margin-top: 25px;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

.form-footer a {
    color: var(--gold);
    text-decoration: none;
    font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TELEGRAM DOĞRULAMA POPUP - MEGA PREMIUM EDİTİON
═══════════════════════════════════════════════════════════════════════════ */
.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.94);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.popup-box {
    background: linear-gradient(165deg, #151520, #0c0c12);
    border-radius: 28px;
    padding: 0;
    max-width: 480px;
    width: 100%;
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(34, 197, 94, 0.42);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
    animation: popup-entrance 0.35s ease-out;
}

@keyframes popup-entrance {
    0% { transform: scale(0.96) translateY(12px); opacity: 0; }
    100% { transform: scale(1) translateY(0); opacity: 1; }
}

.popup-box::before {
    display: none;
}

.popup-particles,
.popup-particle {
    display: none !important;
}

.popup-content {
    position: relative;
    z-index: 1;
    padding: 45px 40px;
}

/* Header with Telegram Icon */
.popup-header {
    margin-bottom: 25px;
}

.popup-icon-wrap {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
}

.popup-icon-ring {
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    background: linear-gradient(145deg, #0088cc, #00aced);
    animation: none;
}

.popup-icon-inner {
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: linear-gradient(145deg, #1a1a25, #0f0f18);
}

.popup-icon {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #00aced;
    text-shadow: 0 0 30px rgba(0,172,237,0.5);
}

.popup-title {
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, #fff, var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.popup-subtitle {
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
}

/* Code Box with Copy Button */
.code-section {
    margin: 30px 0;
}

.code-label {
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 10px;
    color: var(--gold);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.code-box {
    position: relative;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 8px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    overflow: visible;
    box-shadow: none;
}

.code-text {
    font-family: ui-monospace, 'Cascadia Code', 'Segoe UI Mono', monospace;
    font-size: 22px;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 3px;
    text-shadow: 0 0 15px rgba(34,197,94,0.3);
}

.copy-btn {
    position: relative;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    border: none;
    border-radius: 10px;
    padding: 12px 18px;
    color: #000;
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
    white-space: nowrap;
}

.copy-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(34,197,94,0.4);
}

.copy-btn.copied {
    background: linear-gradient(135deg, var(--success), var(--success-dark));
}

.copy-btn i { font-size: 14px; }

/* Warning Box */
.warning-box {
    background: linear-gradient(135deg, rgba(255,107,107,0.1), rgba(255,107,107,0.05));
    border: 1px solid rgba(255,107,107,0.3);
    border-radius: 12px;
    padding: 15px 20px;
    margin: 20px 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.warning-box i {
    font-size: 20px;
    color: #ff6b6b;
}

.warning-box span {
    font-size: 12px;
    color: #ff8a8a;
    text-align: left;
    line-height: 1.5;
}

/* Buttons */
.popup-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 25px;
}

.popup-btn {
    width: 100%;
    padding: 18px 24px;
    border: none;
    border-radius: 14px;
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.popup-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.popup-btn:hover::before { left: 100%; }
.popup-btn.disabled {
    opacity: 0.6;
    pointer-events: none;
    filter: grayscale(0.35);
}

.btn-verify {
    background: linear-gradient(135deg, var(--success), var(--success-dark));
    color: #000;
    box-shadow: 0 4px 20px rgba(0,230,118,0.3);
}

.btn-verify:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,230,118,0.4);
}

.btn-verify:disabled {
    background: linear-gradient(135deg, #333, #222);
    color: #666;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-telegram {
    background: linear-gradient(135deg, #0088cc, #006699);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0,136,204,0.3);
}

.btn-telegram:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,136,204,0.4);
}

.btn-cancel {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.5);
}

.btn-cancel:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ═══ SUCCESS POPUP ═══ */
.popup-box.success {
    border-color: var(--success);
    box-shadow: 0 18px 48px rgba(0, 230, 118, 0.18);
}

.popup-box.success::before {
    display: none;
}

.success-icon-wrap .popup-icon-ring {
    background: linear-gradient(145deg, var(--success), var(--gold-dark));
}

.success-icon-wrap .popup-icon {
    color: var(--success);
    text-shadow: 0 0 30px rgba(0,230,118,0.5);
}

/* Confetti */
.confetti-container {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    top: -10px;
    animation: confetti-fall 3s ease-out forwards;
}

@keyframes confetti-fall {
    0% { transform: translateY(0) rotate(0deg) scale(1); opacity: 1; }
    100% { transform: translateY(500px) rotate(720deg) scale(0); opacity: 0; }
}

/* Money Rain in Success */
.money-rain {
    position: absolute;
    font-size: 24px;
    animation: money-fall 2.5s ease-out forwards;
    opacity: 0.8;
}

@keyframes money-fall {
    0% { transform: translateY(-50px) rotate(0deg); opacity: 0.8; }
    100% { transform: translateY(500px) rotate(360deg); opacity: 0; }
}

/* ═══ Telefon (≤767px) — masaüstüne dokunulmaz ═══ */
@media (max-width: 767px) {
    body {
        align-items: flex-start;
        justify-content: flex-start;
        min-height: 100dvh;
        min-height: 100vh;
        padding:
            max(10px, env(safe-area-inset-top, 0px))
            max(12px, env(safe-area-inset-right, 0px))
            max(16px, env(safe-area-inset-bottom, 0px))
            max(12px, env(safe-area-inset-left, 0px));
    }
    body::before {
        transform: scale(1.02);
        background-position: center top;
    }
    .login-wrapper {
        max-width: 100%;
        width: 100%;
        padding: 8px 4px 12px;
        margin: 0 auto;
    }
    .login-card {
        width: 100%;
        padding: 28px 20px 26px;
        border-radius: 20px;
        box-shadow:
            0 16px 48px rgba(0, 0, 0, 0.5),
            0 0 0 1px rgba(255, 255, 255, 0.04) inset;
    }
    .logo-area {
        margin-bottom: 24px;
    }
    .logo-box {
        width: 88px;
        height: 88px;
        margin-bottom: 14px;
    }
    .brand-name {
        font-size: 24px;
        letter-spacing: 2px;
    }
    .brand-sub {
        letter-spacing: 4px;
        font-size: 8px;
    }
    .form-group {
        margin-bottom: 16px;
    }
    .form-input {
        font-size: 16px;
        padding: 15px 16px 15px 46px;
        border-radius: 14px;
        min-height: 52px;
    }
    .input-box i {
        left: 14px;
        font-size: 18px;
    }
    .btn-login {
        min-height: 52px;
        padding: 16px;
        font-size: 14px;
        letter-spacing: 1.5px;
        border-radius: 14px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    .form-footer {
        margin-top: 20px;
        font-size: 12px;
        line-height: 1.5;
    }
    .alert {
        font-size: 12px;
        padding: 11px 12px;
    }
    .login-card--device {
        padding-top: 24px;
    }
    .login-card--device .logo-area {
        margin-bottom: 20px;
    }
    .login-card--device .logo-box {
        width: 64px;
        height: 64px;
        margin-bottom: 10px;
    }
    .login-card--device .brand-name {
        font-size: 20px;
    }
    .device-account-card {
        margin-bottom: 6px;
        border-radius: 16px;
    }
    .device-account-inner {
        padding: 14px 14px 12px;
        border-radius: 15px;
    }
    .device-account-row {
        align-items: flex-start;
        flex-wrap: wrap;
        gap: 12px;
    }
    .device-account-meta {
        flex: 1 1 calc(100% - 60px);
        min-width: 0;
    }
    .device-account-avatar-wrap {
        width: 48px;
        height: 48px;
    }
    .device-account-avatar,
    .device-account-avatar-fallback {
        width: 48px;
        height: 48px;
    }
    .device-account-avatar-fallback {
        font-size: 22px;
    }
    .device-account-status {
        width: 18px;
        height: 18px;
        font-size: 10px;
    }
    .device-account-meta {
        gap: 3px;
        padding-top: 2px;
    }
    .device-account-name {
        font-size: 19px;
        line-height: 1.2;
    }
    .device-account-switch {
        flex: 1 1 100%;
        order: 3;
        margin-top: 4px;
        width: 100%;
        justify-content: center;
        min-height: 44px;
        padding: 10px 14px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    .device-account-hint {
        margin-bottom: 14px;
        font-size: 11px;
    }
    .login-card--device .form-input {
        min-height: 54px;
    }
    .pin-box-row {
        gap: 6px;
        flex-wrap: nowrap;
        max-width: 100%;
    }
    .pin-box {
        flex: 1 1 0;
        min-width: 0;
        width: auto;
        max-width: 44px;
        height: 50px;
        font-size: 22px;
        border-radius: 12px;
    }
    .twofa-avatar {
        width: 80px;
        height: 80px;
        margin-bottom: 12px;
    }
    .twofa-username {
        font-size: 20px;
    }
    .popup-overlay {
        padding: 0;
        align-items: flex-end;
    }
    .popup-box {
        max-width: 100%;
        border-radius: 20px 20px 0 0;
        max-height: min(92dvh, 92vh);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    .popup-content {
        padding: 28px 20px max(24px, env(safe-area-inset-bottom, 0px));
    }
    .popup-title {
        font-size: 20px;
    }
    .code-text {
        font-size: 17px;
        letter-spacing: 2px;
        word-break: break-all;
    }
    .code-box {
        flex-direction: column;
        gap: 10px;
    }
    .copy-btn {
        width: 100%;
        justify-content: center;
        min-height: 48px;
    }
}

@media (max-width: 380px) {
    .login-card {
        padding: 24px 16px 22px;
    }
    .brand-name {
        font-size: 22px;
    }
    .logo-box {
        width: 76px;
        height: 76px;
    }
    .pin-box {
        max-width: 40px;
        height: 46px;
        font-size: 20px;
    }
    .device-account-name {
        font-size: 17px;
    }
}

@media (max-width: 767px) and (max-height: 520px) {
    body {
        padding-top: 6px;
    }
    .login-card--device .logo-area,
    .logo-area {
        margin-bottom: 14px;
    }
    .login-card--device .logo-box,
    .logo-box {
        width: 56px;
        height: 56px;
        margin-bottom: 8px;
    }
}

@media (hover: none) and (pointer: coarse) {
    .btn-login:hover,
    .device-account-switch:hover {
        transform: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .popup-box { animation: none; }
    .spinner { animation-duration: 1.2s; }
}

.twofa-welcome { text-align: center; margin-bottom: 6px; }
.twofa-avatar {
    width: 96px;
    height: 96px;
    margin: 0 auto 16px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--gold);
    background: rgba(0,0,0,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 24px rgba(34,197,94,0.25);
}
.twofa-avatar img { width: 100%; height: 100%; object-fit: cover; }
.twofa-greet {
    font-size: 12px;
    color: rgba(255,255,255,0.55);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 4px;
}
.twofa-username {
    font-family: 'Montserrat', system-ui, sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 1px;
}