/* ============================================
   LOGIN OVERLAY
   ============================================ */

/* Blur efekt na celou stránku dokud není přihlášeno */
body.zamceno .app-header,
body.zamceno .tab-nav,
body.zamceno .app-main {
    filter: blur(8px);
    pointer-events: none;
    user-select: none;
}

/* Overlay panel */
.login-overlay {
    position: fixed;
    inset: 0;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(15, 14, 23, 0.55);
    backdrop-filter: blur(2px);
    transition: opacity 0.4s ease;
}

.login-overlay.skryto {
    opacity: 0;
    pointer-events: none;
}

/* Login karta */
.login-box {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 36px 28px 32px;
    max-width: 340px;
    width: 100%;
    text-align: center;
    animation: loginPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes loginPop {
    from { opacity: 0; transform: scale(0.88) translateY(16px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.login-logo {
    font-size: 52px;
    margin-bottom: 12px;
    line-height: 1;
}

.login-title {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.login-hint {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

kbd {
    display: inline-block;
    background: var(--bg-input);
    border: 1.5px solid var(--border-strong);
    border-radius: 6px;
    padding: 2px 8px;
    font-family: monospace;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    box-shadow: 0 2px 0 var(--border-strong);
    letter-spacing: 0;
}

.login-touch-hint {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
    margin-top: 6px;
}

/* Indikátorové tečky (progress) */
.login-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 16px;
    min-height: 14px;
}

.login-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-strong);
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.login-dot.aktivni {
    background: var(--accent-primary);
    transform: scale(1.3);
}

.login-dot.hotovo {
    background: var(--accent-green);
    transform: scale(1.1);
}

/* Chybová zpráva */
.login-error {
    font-size: 13px;
    color: var(--accent-red);
    min-height: 18px;
    font-weight: 600;
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%       { transform: translateX(-6px); }
    40%       { transform: translateX(6px); }
    60%       { transform: translateX(-4px); }
    80%       { transform: translateX(4px); }
}

/* Tlačítko odhlášení v headeru */
.logout-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    text-decoration: none;
    transition: background var(--transition);
    cursor: pointer;
}

.logout-btn:hover {
    background: rgba(255,255,255,0.22);
}

/* Skryjeme logout pokud nejsme přihlášeni */
body.zamceno .logout-btn {
    display: none;
}

/* Animace odemčení */
@keyframes odemceni {
    0%   { transform: scale(1); }
    30%  { transform: scale(1.08); }
    60%  { transform: scale(0.96); }
    100% { transform: scale(1); }
}

.login-box.odemceno {
    animation: odemceni 0.5s ease;
    border-color: var(--accent-green);
}

/* Gesto Z - vizuální nápověda */
.z-gesture-hint {
    display: inline-block;
    width: 44px;
    height: 32px;
    position: relative;
    vertical-align: middle;
    margin: 0 4px;
}

.z-gesture-hint svg {
    width: 100%;
    height: 100%;
}

.login-podtitul {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 28px;
    letter-spacing: 0.3px;
}

/* ============================================
   DESIGN UPGRADE 2026 – login / zámek
   ============================================ */
body.zamceno .app-header,
body.zamceno .tab-nav,
body.zamceno .app-main {
    filter: blur(14px) saturate(.82);
}

.login-overlay {
    background:
        radial-gradient(circle at 18% 12%, rgba(255, 122, 89, .34), transparent 28rem),
        radial-gradient(circle at 86% 22%, rgba(107, 140, 255, .26), transparent 26rem),
        rgba(17, 16, 27, 0.54);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.login-box {
    position: relative;
    overflow: hidden;
    max-width: 390px;
    padding: 38px 30px 32px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(255,255,255,.50);
    box-shadow: 0 34px 90px rgba(0,0,0,.24), inset 0 1px 0 rgba(255,255,255,.70);
    backdrop-filter: blur(24px) saturate(150%);
    -webkit-backdrop-filter: blur(24px) saturate(150%);
}

[data-theme="dark"] .login-box {
    background: rgba(31, 30, 45, 0.84);
    border-color: rgba(255,255,255,.10);
    box-shadow: 0 34px 90px rgba(0,0,0,.54), inset 0 1px 0 rgba(255,255,255,.07);
}

.login-box::before {
    content: '';
    position: absolute;
    inset: -1px;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(255,255,255,.55), transparent 42%);
}

.login-logo {
    position: relative;
    width: 86px;
    height: 86px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 32px;
    font-size: 48px;
    background: linear-gradient(135deg, rgba(255, 122, 89, .18), rgba(107, 140, 255, .14));
    box-shadow: inset 0 1px 0 rgba(255,255,255,.72), 0 18px 40px rgba(55,39,30,.14);
}

.login-title {
    position: relative;
    font-size: 31px;
    line-height: 1.05;
    letter-spacing: -1px;
    margin-bottom: 10px;
}

.login-podtitul {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    margin-bottom: 20px;
    border-radius: 999px;
    background: rgba(255, 122, 89, .12);
    color: var(--accent-primary);
    font-weight: 800;
}

.login-hint {
    position: relative;
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 26px;
}

kbd {
    border-radius: 10px;
    padding: 3px 10px;
    background: rgba(255,255,255,.74);
    border: 1px solid var(--border-strong);
    box-shadow: 0 3px 0 rgba(73,58,42,.18), inset 0 1px 0 rgba(255,255,255,.8);
}

[data-theme="dark"] kbd {
    background: rgba(255,255,255,.07);
}

.login-dots {
    position: relative;
    gap: 12px;
    margin-bottom: 18px;
}

.login-dot {
    width: 13px;
    height: 13px;
    background: rgba(117,107,125,.24);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.42);
}

.login-dot.aktivni {
    background: linear-gradient(135deg, #ff8a63, #ff684f);
    box-shadow: 0 8px 18px rgba(255,104,79,.28);
}

.login-dot.hotovo {
    background: linear-gradient(135deg, #39c986, #28a96e);
    box-shadow: 0 8px 18px rgba(57,201,134,.26);
}

.login-error {
    position: relative;
}

.z-gesture-hint {
    filter: drop-shadow(0 8px 16px rgba(255,122,89,.16));
}


/* ==========================================================
   V3 PREMIUM MAKEOVER – login obrazovka
   ========================================================== */
.login-overlay {
    background:
        radial-gradient(circle at 12% 8%, rgba(255,95,109,.42), transparent 26rem),
        radial-gradient(circle at 92% 10%, rgba(124,58,237,.38), transparent 28rem),
        rgba(13,11,22,.56);
    backdrop-filter: blur(26px) saturate(150%);
    -webkit-backdrop-filter: blur(26px) saturate(150%);
}

.login-box {
    border: 1px solid rgba(255,255,255,.62);
    outline: 1px solid var(--border);
    background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(255,255,255,.76));
    box-shadow: 0 40px 100px rgba(33,23,45,.30);
}

[data-theme="dark"] .login-box {
    border-color: rgba(255,255,255,.10);
    background: linear-gradient(145deg, rgba(36,32,54,.94), rgba(24,22,36,.82));
}

.login-logo {
    width: 78px;
    height: 78px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(255,95,109,.18), rgba(124,58,237,.16));
    box-shadow: inset 0 1px 0 rgba(255,255,255,.68), 0 18px 42px rgba(124,58,237,.18);
}

.login-title {
    font-size: 31px;
    letter-spacing: -1px;
}

.login-dot.aktivni,
.login-dot.hotovo {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-purple));
}

kbd {
    border-radius: 10px;
    background: rgba(255,255,255,.70);
}


/* ==========================================================
   V4 MODULAR LOGIN – bezpatkový, čistý, modulární
   ========================================================== */
.login-overlay {
    background:
        radial-gradient(circle at 18% 10%, rgba(37,99,235,.26), transparent 26rem),
        radial-gradient(circle at 88% 14%, rgba(14,165,233,.20), transparent 24rem),
        rgba(15,23,42,.46);
    backdrop-filter: blur(22px) saturate(145%);
    -webkit-backdrop-filter: blur(22px) saturate(145%);
}

.login-box {
    max-width: 410px;
    padding: 34px 30px 30px;
    border-radius: 30px !important;
    background: #fff !important;
    border: 1px solid rgba(255,255,255,.76) !important;
    box-shadow: 0 26px 70px rgba(15,23,42,.22) !important;
    font-family: var(--font-sans) !important;
}

[data-theme="dark"] .login-box {
    background: #111827 !important;
    border-color: rgba(255,255,255,.08) !important;
}

.login-box::before { display: none !important; }

.login-logo {
    width: 72px;
    height: 72px;
    border-radius: 24px;
    background: linear-gradient(135deg, #dbeafe, #e0f2fe);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.82), 0 14px 32px rgba(37,99,235,.16);
}

[data-theme="dark"] .login-logo { background: linear-gradient(135deg, #1e3a8a, #164e63); }

.login-title {
    font-family: var(--font-sans) !important;
    font-size: 30px;
    font-weight: 900;
    letter-spacing: -.05em;
}

.login-podtitul {
    background: #e8f1ff;
    color: #1d4ed8;
    border-radius: 999px;
    font-weight: 850;
}

.login-hint { font-size: 14px; }

kbd {
    font-family: var(--font-sans) !important;
    border-radius: 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-strong);
    box-shadow: 0 3px 0 rgba(15,23,42,.12);
}

.login-dot {
    width: 12px;
    height: 12px;
    background: var(--border-strong);
}

.login-dot.aktivni,
.login-dot.hotovo {
    background: #2563eb;
    box-shadow: 0 8px 18px rgba(37,99,235,.22);
}

/* ==========================================================
   SECURE PIN LOGIN – doplnění formuláře
   ========================================================== */
.login-form {
    position: relative;
    display: grid;
    gap: 12px;
    margin: 4px 0 14px;
}

.login-label {
    font-size: 13px;
    font-weight: 800;
    color: var(--text-secondary);
    text-align: left;
}

.login-pin {
    width: 100%;
    min-height: 52px;
    border-radius: 18px;
    border: 1.5px solid var(--border-strong);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 22px;
    font-weight: 900;
    letter-spacing: .24em;
    text-align: center;
    outline: none;
    padding: 0 16px;
    transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.login-pin:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(37,99,235,.14);
}

.login-submit {
    min-height: 50px;
    border: 0;
    border-radius: 18px;
    background: var(--accent-primary);
    color: #fff;
    font-weight: 900;
    font-size: 15px;
    cursor: pointer;
    transition: transform .18s ease, filter .18s ease, opacity .18s ease;
}

.login-submit:hover { transform: translateY(-1px); filter: brightness(1.03); }
.login-submit:disabled { opacity: .7; cursor: wait; transform: none; }

.login-help {
    position: relative;
    margin: 0 0 14px;
    font-size: 12px;
    line-height: 1.55;
    color: var(--text-muted);
}

.login-help code {
    font-size: 11px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 7px;
    padding: 1px 5px;
}


/* v25 - login bez mobilního problikávání */
body.prihlasen .login-overlay { display: none !important; }
@media (hover: none) and (pointer: coarse), (max-width: 768px) {
    .login-overlay, .login-box {
        -webkit-backdrop-filter: none !important;
        backdrop-filter: none !important;
    }
    body.zamceno .app-header,
    body.zamceno .tab-nav,
    body.zamceno .app-main {
        filter: none !important;
        opacity: .18;
    }
    .login-overlay { transition: opacity .12s ease !important; }
    .login-box, .login-dot, .login-submit { animation: none !important; transform: none !important; }
}


/* v34: login respektuje automatický kontrast zvolené barvy */
.login-submit {
    color: var(--user-accent-contrast, #ffffff) !important;
}
.login-pin:focus {
    border-color: var(--user-accent, var(--accent-primary)) !important;
    box-shadow: 0 0 0 4px rgb(var(--user-accent-rgb, 37 99 235) / .14) !important;
}