/* Rebrand + modernize the shared Roundcube login page — see custom_branding.php
 *
 * Scoped to `body.task-login`: this plugin's stylesheet is loaded on every
 * task (mail, settings, ...), not just login, because there's no per-page
 * hook available without a full skin rebuild (see custom_branding.php).
 * `#layout-content` in particular is reused by the mail template for the
 * message-preview pane — an unscoped rule here previously squeezed the
 * reading pane into a narrow floating card, making every opened email look
 * like a cramped mobile view instead of just modernizing the login form. */

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

@keyframes brandBlobDrift1 {
    0%   { transform: translate(-10%, -10%) scale(1); }
    50%  { transform: translate(8%, 12%) scale(1.15); }
    100% { transform: translate(-10%, -10%) scale(1); }
}

@keyframes brandBlobDrift2 {
    0%   { transform: translate(10%, 8%) scale(1); }
    50%  { transform: translate(-12%, -8%) scale(1.1); }
    100% { transform: translate(10%, 8%) scale(1); }
}

@keyframes brandCardIn {
    from { opacity: 0; transform: translateY(24px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes brandLogoFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-4px); }
}

body.task-login {
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
    background: linear-gradient(120deg, #0f172a, #1e293b, #334e68, #486581, #1e293b);
    background-size: 300% 300%;
    animation: brandGradientShift 18s ease infinite;
}

body.task-login::before,
body.task-login::after {
    content: "";
    position: fixed;
    border-radius: 50%;
    filter: blur(60px);
    pointer-events: none;
    z-index: 0;
}

body.task-login::before {
    top: -15%;
    left: -10%;
    width: 45vw;
    height: 45vw;
    background: radial-gradient(circle, rgba(98, 125, 152, 0.55), transparent 70%);
    animation: brandBlobDrift1 22s ease-in-out infinite;
}

body.task-login::after {
    bottom: -20%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(51, 78, 104, 0.5), transparent 70%);
    animation: brandBlobDrift2 26s ease-in-out infinite;
}

body.task-login #layout-content {
    position: relative;
    z-index: 1;
    max-width: 420px;
    margin: 8vh auto 0;
    padding: 44px 40px 32px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 20px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.45);
    animation: brandCardIn 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

body.task-login #logo {
    display: block;
    margin: 0 auto 28px;
    max-width: 120px;
    height: auto;
    animation: brandLogoFloat 4s ease-in-out infinite;
}

body.task-login #login-form .form-control,
body.task-login #login-form input[type="text"],
body.task-login #login-form input[type="password"] {
    border-radius: 10px;
    border: 1px solid #d9e2ec;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

body.task-login #login-form .form-control:focus,
body.task-login #login-form input:focus {
    border-color: #486581;
    box-shadow: 0 0 0 4px rgba(72, 101, 129, 0.15);
    transform: translateY(-1px);
}

body.task-login #login-form button.button.mainaction,
body.task-login #login-form input[type="submit"],
body.task-login #login-form button[type="submit"] {
    background: linear-gradient(135deg, #486581, #334e68);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    box-shadow: 0 6px 16px rgba(51, 78, 104, 0.35);
}

body.task-login #login-form button.button.mainaction:hover,
body.task-login #login-form input[type="submit"]:hover,
body.task-login #login-form button[type="submit"]:hover {
    background: linear-gradient(135deg, #334e68, #1e293b);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(51, 78, 104, 0.45);
}

body.task-login #login-form button.button.mainaction:active,
body.task-login #login-form input[type="submit"]:active,
body.task-login #login-form button[type="submit"]:active {
    transform: translateY(0);
}

body.task-login #login-footer {
    color: #829ab1;
    text-align: center;
    margin-top: 20px;
    opacity: 0;
    animation: brandCardIn 0.7s ease 0.3s forwards;
}

body.task-login #login-footer a.support-link {
    color: #486581;
    transition: color 0.2s ease;
}

body.task-login #login-footer a.support-link:hover {
    color: #1e293b;
}

@media (prefers-color-scheme: dark) {
    body.task-login #layout-content {
        background: rgba(15, 26, 38, 0.85);
        border-color: rgba(255, 255, 255, 0.08);
        box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
    }
    body.task-login #login-form .form-control,
    body.task-login #login-form input[type="text"],
    body.task-login #login-form input[type="password"] {
        background: #1e2d3a;
        border-color: #334e68;
        color: #d9e2ec;
    }
    body.task-login #login-footer {
        color: #627d98;
    }
}

@media (max-width: 480px) {
    body.task-login #layout-content {
        margin: 4vh 16px 0;
        padding: 32px 24px 24px;
    }
    body.task-login::before, body.task-login::after {
        width: 70vw;
        height: 70vw;
    }
}

@media (prefers-reduced-motion: reduce) {
    body.task-login,
    body.task-login::before,
    body.task-login::after,
    body.task-login #layout-content,
    body.task-login #logo,
    body.task-login #login-footer {
        animation: none !important;
    }
}