:root {
    --mail-cyan: #63e7ff;
    --mail-blue: #4f7cff;
    --mail-violet: #9b6cff;
    --mail-green: #55e6a5;
    --mail-red: #ff526f;
    --mail-ink: #060b1a;
    --mail-panel: rgba(11, 18, 40, 0.94);
    --mail-panel-soft: rgba(18, 27, 55, 0.86);
    --mail-line: rgba(132, 174, 255, 0.22);
    --mail-text: #eef6ff;
    --mail-muted: #9eb1cf;
}

.universe-mail-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 42px;
    padding: 0.58rem 0.85rem;
    border: 1px solid rgba(99, 231, 255, 0.42);
    border-radius: 999px;
    background: rgba(7, 17, 39, 0.82);
    color: #eafaff;
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0.01em;
    box-shadow: inset 0 0 18px rgba(69, 147, 255, 0.08);
}

.universe-mail-button:hover,
.universe-mail-button:focus-visible {
    border-color: rgba(99, 231, 255, 0.82);
    box-shadow: 0 0 20px rgba(59, 183, 255, 0.2);
}

.universe-mail-button-icon {
    font-size: 1.05rem;
    line-height: 1;
}

.universe-mail-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.35rem;
    height: 1.35rem;
    padding: 0 0.33rem;
    border-radius: 999px;
    background: var(--mail-red);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 900;
    box-shadow: 0 0 0 2px #081024, 0 0 14px rgba(255, 82, 111, 0.65);
}

.universe-mail-badge[hidden] {
    display: none !important;
}

.mail-page {
    min-height: 100vh;
    margin: 0;
    color: var(--mail-text);
    background:
        radial-gradient(circle at 15% 5%, rgba(79, 124, 255, 0.17), transparent 30rem),
        radial-gradient(circle at 90% 8%, rgba(155, 108, 255, 0.13), transparent 28rem),
        linear-gradient(180deg, #050917 0%, #02050d 100%);
}

.mail-page *,
.mail-page *::before,
.mail-page *::after {
    box-sizing: border-box;
}

.mail-topbar {
    width: min(1440px, calc(100% - 32px));
    margin: 0 auto;
    padding: 18px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.mail-brand {
    display: inline-flex;
    flex-direction: column;
    text-decoration: none;
    line-height: 1;
}

.mail-brand strong {
    font-size: clamp(1.1rem, 2.2vw, 1.6rem);
    letter-spacing: 0.13em;
    color: #f2fbff;
}

.mail-brand span {
    margin-top: 0.28rem;
    color: var(--mail-cyan);
    font-size: 0.7rem;
    letter-spacing: 0.32em;
}

.mail-top-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mail-home-link,
.mail-player-chip {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.55rem 0.8rem;
    border: 1px solid var(--mail-line);
    border-radius: 999px;
    background: rgba(11, 18, 40, 0.76);
    color: var(--mail-text);
    text-decoration: none;
    font-weight: 750;
}

.mail-player-chip img,
.mail-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid rgba(99, 231, 255, 0.38);
}

.mail-wrap {
    width: min(1440px, calc(100% - 32px));
    margin: 0 auto;
    padding: 12px 0 40px;
}

.mail-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 18px;
    margin: 4px 0 18px;
}

.mail-heading h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.45rem);
    letter-spacing: -0.035em;
}

.mail-heading p {
    margin: 0.45rem 0 0;
    color: var(--mail-muted);
    max-width: 48rem;
}

.mail-unread-summary {
    flex: 0 0 auto;
    padding: 0.65rem 0.9rem;
    border: 1px solid rgba(99, 231, 255, 0.28);
    border-radius: 14px;
    background: rgba(6, 15, 35, 0.72);
    color: var(--mail-cyan);
    font-weight: 850;
}

.mail-grid {
    min-height: 650px;
    display: grid;
    grid-template-columns: 210px minmax(300px, 390px) minmax(0, 1fr);
    overflow: hidden;
    border: 1px solid var(--mail-line);
    border-radius: 22px;
    background: rgba(3, 8, 21, 0.84);
    box-shadow: 0 26px 80px rgba(0, 0, 0, 0.35);
}

.mail-sidebar {
    padding: 18px;
    border-right: 1px solid var(--mail-line);
    background: rgba(8, 14, 32, 0.96);
}

.mail-compose-link,
.mail-folder-link {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 0.78rem 0.85rem;
    margin-bottom: 8px;
    border: 1px solid transparent;
    border-radius: 13px;
    color: var(--mail-text);
    text-decoration: none;
    font-weight: 800;
}

.mail-compose-link {
    justify-content: center;
    margin-bottom: 18px;
    background: linear-gradient(135deg, var(--mail-blue), var(--mail-violet));
    box-shadow: 0 10px 26px rgba(79, 124, 255, 0.2);
}

.mail-folder-link:hover,
.mail-folder-link.is-active {
    border-color: rgba(99, 231, 255, 0.3);
    background: rgba(61, 100, 180, 0.16);
}

.mail-folder-count {
    min-width: 1.65rem;
    padding: 0.14rem 0.38rem;
    border-radius: 999px;
    background: rgba(123, 151, 204, 0.14);
    color: var(--mail-muted);
    text-align: center;
    font-size: 0.76rem;
}

.mail-folder-count.has-unread {
    background: var(--mail-red);
    color: #fff;
}

.mail-list-panel {
    border-right: 1px solid var(--mail-line);
    background: rgba(8, 14, 31, 0.72);
    overflow: auto;
}

.mail-list-title {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-height: 60px;
    padding: 0 16px;
    border-bottom: 1px solid var(--mail-line);
    background: rgba(8, 14, 31, 0.96);
}

.mail-list-title strong {
    font-size: 1rem;
}

.mail-list-title span {
    color: var(--mail-muted);
    font-size: 0.82rem;
}

.mail-list-empty {
    padding: 30px 20px;
    color: var(--mail-muted);
    text-align: center;
}

.mail-item {
    position: relative;
    display: block;
    padding: 14px 16px;
    border-bottom: 1px solid rgba(132, 174, 255, 0.12);
    color: inherit;
    text-decoration: none;
    transition: background 120ms ease, border-color 120ms ease;
}

.mail-item:hover,
.mail-item.is-selected {
    background: rgba(69, 108, 189, 0.16);
}

.mail-item.is-unread::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 6px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--mail-red);
    box-shadow: 0 0 10px rgba(255, 82, 111, 0.78);
}

.mail-item-head {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    color: #dce9ff;
    font-size: 0.82rem;
}

.mail-item-head strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mail-item-head time {
    flex: 0 0 auto;
    color: #7f95b7;
    font-size: 0.74rem;
}

.mail-item-subject {
    margin: 0.35rem 0 0.22rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 800;
}

.mail-item-preview {
    margin: 0;
    color: #8fa4c5;
    font-size: 0.83rem;
    line-height: 1.35;
}

.mail-reader {
    min-width: 0;
    padding: clamp(20px, 3vw, 34px);
    background:
        radial-gradient(circle at 90% 0%, rgba(84, 100, 255, 0.08), transparent 22rem),
        rgba(5, 11, 27, 0.8);
}

.mail-reader-empty {
    min-height: 480px;
    display: grid;
    place-items: center;
    color: var(--mail-muted);
    text-align: center;
}

.mail-reader-empty div {
    max-width: 28rem;
}

.mail-reader-empty .mail-empty-icon {
    display: block;
    margin-bottom: 12px;
    font-size: 3rem;
}

.mail-message-kicker,
.mail-compose-kicker {
    margin: 0 0 6px;
    color: var(--mail-cyan);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.72rem;
    font-weight: 900;
}

.mail-reader h2,
.mail-compose h2 {
    margin: 0;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    overflow-wrap: anywhere;
}

.mail-message-meta {
    display: flex;
    align-items: center;
    gap: 11px;
    margin: 20px 0 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--mail-line);
}

.mail-message-meta-copy {
    min-width: 0;
}

.mail-message-meta-copy strong,
.mail-message-meta-copy span {
    display: block;
}

.mail-message-meta-copy span,
.mail-message-meta-copy time {
    margin-top: 2px;
    color: var(--mail-muted);
    font-size: 0.84rem;
}

.mail-message-body {
    min-height: 160px;
    color: #edf5ff;
    font-size: 1rem;
    line-height: 1.65;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.mail-message-source {
    margin-top: 20px;
    padding: 12px 14px;
    border: 1px solid rgba(85, 230, 165, 0.22);
    border-radius: 12px;
    background: rgba(85, 230, 165, 0.07);
    color: #bdf8dd;
    font-size: 0.86rem;
}

.mail-reader-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 26px;
}

.mail-action,
.mail-secondary-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0.64rem 1rem;
    border-radius: 12px;
    text-decoration: none;
    font: inherit;
    font-weight: 850;
    cursor: pointer;
}

.mail-action {
    border: 0;
    color: #fff;
    background: linear-gradient(135deg, var(--mail-blue), var(--mail-violet));
}

.mail-secondary-action {
    border: 1px solid var(--mail-line);
    color: var(--mail-text);
    background: rgba(17, 27, 56, 0.72);
}

.mail-compose {
    max-width: 760px;
}

.mail-compose-form {
    display: grid;
    gap: 16px;
    margin-top: 22px;
}

.mail-field {
    position: relative;
    display: grid;
    gap: 7px;
}

.mail-field > span {
    color: #cdddf6;
    font-size: 0.84rem;
    font-weight: 800;
}

.mail-field input,
.mail-field textarea {
    width: 100%;
    border: 1px solid rgba(132, 174, 255, 0.25);
    border-radius: 12px;
    outline: 0;
    background: rgba(7, 14, 33, 0.92);
    color: #f3f8ff;
    font: inherit;
}

.mail-field input {
    min-height: 46px;
    padding: 0 13px;
}

.mail-field textarea {
    min-height: 220px;
    resize: vertical;
    padding: 12px 13px;
    line-height: 1.5;
}

.mail-field input:focus,
.mail-field textarea:focus {
    border-color: rgba(99, 231, 255, 0.72);
    box-shadow: 0 0 0 3px rgba(99, 231, 255, 0.08);
}

.mail-player-results {
    position: absolute;
    z-index: 10;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    max-height: 250px;
    overflow: auto;
    border: 1px solid rgba(132, 174, 255, 0.28);
    border-radius: 12px;
    background: #0b132b;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
}

.mail-player-results[hidden] {
    display: none;
}

.mail-player-result {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 0;
    border-bottom: 1px solid rgba(132, 174, 255, 0.1);
    background: transparent;
    color: #eef7ff;
    text-align: left;
    font: inherit;
    cursor: pointer;
}

.mail-player-result:hover,
.mail-player-result:focus-visible {
    background: rgba(79, 124, 255, 0.18);
}

.mail-player-result small {
    color: var(--mail-muted);
}

.mail-compose-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.mail-form-status {
    min-height: 1.4em;
    margin: 0;
    color: var(--mail-muted);
    font-size: 0.88rem;
}

.mail-form-status.is-error {
    color: #ff9bad;
}

.mail-form-status.is-success {
    color: #83efbd;
}

.mail-error-banner {
    margin-bottom: 16px;
    padding: 12px 14px;
    border: 1px solid rgba(255, 82, 111, 0.3);
    border-radius: 12px;
    background: rgba(255, 82, 111, 0.08);
    color: #ffc6d0;
}

@media (max-width: 1040px) {
    .mail-grid {
        grid-template-columns: 170px 320px minmax(0, 1fr);
    }
}

@media (max-width: 820px) {
    .mail-topbar,
    .mail-wrap {
        width: min(100% - 20px, 760px);
    }

    .mail-top-actions .mail-player-chip {
        display: none;
    }

    .mail-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .mail-grid {
        min-height: 0;
        grid-template-columns: 1fr;
        overflow: visible;
        border-radius: 18px;
    }

    .mail-sidebar {
        display: grid;
        grid-template-columns: 1.15fr 1fr 1fr;
        gap: 8px;
        padding: 10px;
        border-right: 0;
        border-bottom: 1px solid var(--mail-line);
    }

    .mail-compose-link,
    .mail-folder-link {
        min-height: 44px;
        margin: 0;
        padding: 0.62rem 0.65rem;
    }

    .mail-list-panel {
        max-height: 330px;
        border-right: 0;
        border-bottom: 1px solid var(--mail-line);
    }

    .mail-reader {
        min-height: 380px;
        padding: 20px 16px 26px;
    }

    .mail-reader-empty {
        min-height: 300px;
    }
}

@media (max-width: 520px) {
    .universe-mail-button {
        padding-inline: 0.65rem;
    }

    .universe-mail-button-label {
        display: none;
    }

    .mail-home-link span {
        display: none;
    }

    .mail-sidebar {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .mail-folder-link {
        justify-content: center;
    }

    .mail-folder-link > span:first-child {
        font-size: 0.86rem;
    }
}