/* ================================================================
   App: Mail — Contact compose (email-client layout)
   --------------------------------------------------------------
   Layout zones (top-down):
     .mail                  flex column, full window-body
     .mail-form             flex column, fills .mail
       .mail-form__header   From / To / Subject (titlebar tone)
       .mail-form__errors   collected error list (slides in)
       .mail-form__body     flex:1, holds the message-textarea
       .mail-form__footer   char-count + send button (sticky-ish)

   Inputs are NOT boxed — they are flat with underline-on-focus,
   matching Apple Mail / Thunderbird compose-aesthetic.
   ================================================================ */

[data-window="mail"] .mail {
    flex: 1;
    background: var(--byte-ink-900);
    color: var(--byte-text);
    font-family: var(--byte-font-ui);
    display: flex;
    flex-direction: column;
    position: relative; /* anchor for toast */
    min-height: 0;
}

[data-window="mail"] .mail-form {
    display: flex;
    flex-direction: column;
    flex: 1;
    margin: 0;
    min-height: 0;
}

/* ---------- header (From / To / Subject) ---------- */

[data-window="mail"] .mail-form__header {
    background: var(--byte-ink-800);
    padding: 4px 24px 0;
    border-bottom: 1px solid var(--byte-stroke);
}

[data-window="mail"] .mail-form__row {
    display: grid;
    grid-template-columns: 64px 1fr;
    align-items: center;
    column-gap: 14px;
    padding: 9px 0;
    border-bottom: 1px solid rgba(26, 47, 56, 0.55);
    min-height: 32px;
}

[data-window="mail"] .mail-form__row:last-child { border-bottom: none; }

[data-window="mail"] .mail-form__row-label {
    font-family: var(--byte-font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--byte-fog-500);
    text-align: right;
    user-select: none;
    letter-spacing: 0.2px;
}

[data-window="mail"] .mail-form__row-fields {
    display: flex;
    align-items: center;
    gap: 0;
    width: 100%;
}

[data-window="mail"] .mail-form__row-fields--two {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 14px;
}

[data-window="mail"] .mail-form__row-value {
    font-family: var(--byte-font-mono);
    font-size: 13px;
    color: var(--byte-fog-300);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

[data-window="mail"] .mail-form__row-value i {
    color: var(--byte-primary);
    font-size: 16px;
}

/* readonly To-row: full-row anchor with hover affordance */
[data-window="mail"] a.mail-form__row-value {
    text-decoration: none;
    color: var(--byte-fog-300);
    transition: color 0.12s;
}
[data-window="mail"] a.mail-form__row-value:hover {
    color: var(--byte-text);
}

/* alt-channels row: WhatsApp + response-time inline */
[data-window="mail"] .mail-form__alt-channels {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 18px;
    font-family: var(--byte-font-mono);
    font-size: 12.5px;
    color: var(--byte-fog-300);
}

[data-window="mail"] .mail-form__alt-channel {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--byte-fog-300);
    text-decoration: none;
    transition: color 0.12s;
}

[data-window="mail"] .mail-form__alt-channel:hover {
    color: var(--byte-primary);
}

[data-window="mail"] .mail-form__alt-channel i {
    font-size: 16px;
    color: var(--byte-primary);
}

[data-window="mail"] .mail-form__alt-meta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--byte-fog-500);
}

[data-window="mail"] .mail-form__alt-meta i {
    font-size: 14px;
    color: var(--byte-fog-500);
}

[data-window="mail"] .mail-form__input {
    background: transparent;
    border: none;
    color: var(--byte-text);
    font-family: var(--byte-font-ui);
    font-size: 13.5px;
    padding: 4px 0;
    outline: none;
    width: 100%;
    min-width: 0;
    border-bottom: 1px solid transparent;
    transition: border-color 0.14s ease;
}

[data-window="mail"] .mail-form__input::placeholder {
    color: var(--byte-fog-700);
    opacity: 1;
}

[data-window="mail"] .mail-form__input:focus {
    border-bottom-color: var(--byte-primary);
}

[data-window="mail"] .mail-form__input.has-error {
    border-bottom-color: #ef4444;
}

[data-window="mail"] .mail-form__input:autofill,
[data-window="mail"] .mail-form__input:-webkit-autofill {
    -webkit-text-fill-color: var(--byte-text);
    -webkit-box-shadow: 0 0 0 1000px var(--byte-ink-800) inset;
    transition: background-color 99999s;
}

/* ---------- error summary ---------- */

[data-window="mail"] .mail-form__errors { padding: 0 24px; }
[data-window="mail"] .mail-form__errors:empty { display: none; }

[data-window="mail"] .mail-form__error-list {
    list-style: none;
    margin: 12px 0 0;
    padding: 10px 14px;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.32);
    border-radius: 6px;
    font-family: var(--byte-font-mono);
    font-size: 12px;
    color: #ef4444;
}

[data-window="mail"] .mail-form__error-list li {
    line-height: 1.65;
    padding-left: 14px;
    position: relative;
}

[data-window="mail"] .mail-form__error-list li::before {
    content: '!';
    position: absolute;
    left: 0;
    font-weight: 700;
}

/* ---------- message body ---------- */

[data-window="mail"] .mail-form__body {
    flex: 1;
    padding: 18px 24px 14px;
    display: flex;
    flex-direction: column;
    min-height: 140px;
}

[data-window="mail"] .mail-form__textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--byte-text);
    font-family: var(--byte-font-ui);
    font-size: 13.5px;
    line-height: 1.65;
    padding: 0;
    resize: none;
    outline: none;
    width: 100%;
}

[data-window="mail"] .mail-form__textarea::placeholder {
    color: var(--byte-fog-700);
    opacity: 1;
}

[data-window="mail"] .mail-form__textarea.has-error {
    box-shadow: inset 0 -2px 0 #ef4444;
}

/* honeypot */
[data-window="mail"] .mail-form__honeypot {
    position: absolute !important;
    left: -10000px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    opacity: 0 !important;
}

/* ---------- footer ---------- */

[data-window="mail"] .mail-form__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 24px;
    background: var(--byte-ink-800);
    border-top: 1px solid var(--byte-stroke);
}

[data-window="mail"] .mail-form__footer-meta {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    font-family: var(--byte-font-mono);
    font-size: 11px;
    letter-spacing: 0.2px;
}

[data-window="mail"] .mail-form__charcount { color: var(--byte-fog-500); }
[data-window="mail"] .mail-form__charcount[data-near-limit] { color: var(--byte-warning, #f59e0b); }
[data-window="mail"] .mail-form__charcount[data-at-limit]   { color: #ef4444; }

[data-window="mail"] .mail-form__draft-saved {
    color: var(--byte-fog-700);
    font-style: italic;
    transition: opacity 0.18s ease;
    animation: mail-draft-fade 0.18s ease;
}

@keyframes mail-draft-fade {
    from { opacity: 0; }
    to   { opacity: 1; }
}

[data-window="mail"] .mail-form__btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 18px;
    border-radius: 5px;
    border: 1px solid var(--byte-primary);
    background: var(--byte-primary);
    color: var(--byte-ink-950);
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.12s, opacity 0.12s;
}

[data-window="mail"] .mail-form__btn:hover { filter: brightness(1.1); }

[data-window="mail"] .mail-form__btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

[data-window="mail"] .mail-form__btn i { font-size: 15px; }

/* ---------- toast (overlays top-right of body area) ---------- */

[data-window="mail"] .mail-form__toast {
    position: absolute;
    top: 14px;
    right: 16px;
    max-width: min(60%, 360px);
    padding: 10px 14px;
    border-radius: 6px;
    font-family: var(--byte-font-mono);
    font-size: 12px;
    line-height: 1.5;
    border: 1px solid var(--byte-stroke);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    z-index: 10;
    animation: mail-toast-slide 0.18s ease;
}

@keyframes mail-toast-slide {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

[data-window="mail"] .mail-form__toast--success {
    background: rgba(34, 197, 94, 0.14);
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.45);
}

[data-window="mail"] .mail-form__toast--error {
    background: rgba(239, 68, 68, 0.14);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.45);
}

[data-window="mail"] .mail-form__toast--info {
    background: rgba(253, 125, 0, 0.12);
    color: var(--byte-primary);
    border-color: rgba(253, 125, 0, 0.4);
}

/* ---------- mobile ---------- */

@media (max-width: 600px) {
    [data-window="mail"] .mail-form__header,
    [data-window="mail"] .mail-form__body,
    [data-window="mail"] .mail-form__footer,
    [data-window="mail"] .mail-form__errors {
        padding-left: 14px;
        padding-right: 14px;
    }
    [data-window="mail"] .mail-form__row {
        grid-template-columns: 56px 1fr;
        column-gap: 10px;
    }
    [data-window="mail"] .mail-form__row-fields--two {
        grid-template-columns: 1fr;
        gap: 6px;
    }
}