:root {
    color-scheme: light;
    --bg: #f7f1e8;
    --bg-dark: #e8dfd1;
    --ink: #151a21;
    --ink-soft: #3f4855;
    --accent: #0f766e;
    --accent-strong: #0b4f4a;
    --peach: #f2c6a0;
    --sand: #efe7d8;
    --shadow: 0 24px 60px rgba(18, 28, 43, 0.18);
    --radius: 18px;
    --radius-sm: 12px;
    --transition: 220ms ease;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Space Grotesk", system-ui, sans-serif;
    color: var(--ink);
    background: radial-gradient(circle at top right, #f9f4ec 0%, #efe3d1 40%, #e3d9c9 100%);
    min-height: 100vh;
}

.aurora {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(15, 118, 110, 0.15), transparent 40%),
        radial-gradient(circle at 80% 10%, rgba(242, 198, 160, 0.3), transparent 35%),
        radial-gradient(circle at 30% 80%, rgba(21, 26, 33, 0.08), transparent 45%);
    pointer-events: none;
    mix-blend-mode: multiply;
    animation: float 16s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-18px); }
}

.app {
    position: relative;
    padding: 32px 40px 48px;
    max-width: 1280px;
    margin: 0 auto;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.brand {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.brand-mark {
    font-family: "Fraunces", serif;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-tag {
    font-size: 14px;
    color: var(--ink-soft);
}

.topbar-actions {
    display: flex;
    gap: 12px;
}

.material-symbols-rounded {
    font-size: 20px !important;
    line-height: 1 !important;
    font-variation-settings: var(--msr-variation, "FILL" 0, "wght" 500, "GRAD" 0, "opsz" 24) !important;
}

.shell {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.account-card,
.mailbox-card,
.relay-card,
.security-card {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid rgba(21, 26, 33, 0.08);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.account-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-soft);
}

.account-value {
    margin-top: 10px;
    font-size: 16px;
    font-weight: 600;
}

.account-meta {
    margin-top: 6px;
    font-size: 13px;
    color: var(--accent);
}


.mailbox-title,
.security-title {
    font-weight: 600;
    margin-bottom: 12px;
}

.mailbox {
    width: 100%;
    border: none;
    background: transparent;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--ink);
}

.mailbox-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.mailbox.active {
    background: rgba(15, 118, 110, 0.12);
    color: var(--accent-strong);
}

.mailbox:hover {
    background: rgba(15, 118, 110, 0.08);
}

.count {
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--sand);
}

.relay-card label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-soft);
}

.relay-card input {
    width: 100%;
    margin-top: 8px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(21, 26, 33, 0.15);
    background: #fff;
}

.security-line {
    font-size: 13px;
    color: var(--ink-soft);
    margin-bottom: 6px;
}

.inbox {
    background: rgba(255, 255, 255, 0.7);
    border-radius: 28px;
    padding: 24px;
    border: 1px solid rgba(21, 26, 33, 0.08);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.inbox-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.inbox-header h1 {
    font-family: "Fraunces", serif;
    font-size: 28px;
    margin: 0;
}

.inbox-header p {
    margin: 6px 0 0;
    color: var(--ink-soft);
}

.status-pill {
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(21, 26, 33, 0.1);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.content-grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 18px;
    min-height: 480px;
}

.message-list {
    position: relative;
    background: rgba(249, 246, 242, 0.8);
    border-radius: 20px;
    padding: 16px;
    overflow-y: auto;
    max-height: 600px;
}

.message-card {
    border-radius: 16px;
    padding: 14px;
    background: #fff;
    border: 1px solid rgba(21, 26, 33, 0.08);
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.message-card.active {
    border-color: rgba(15, 118, 110, 0.4);
    box-shadow: 0 10px 25px rgba(15, 118, 110, 0.15);
}

.message-card:hover {
    transform: translateY(-2px);
}

.message-card h4 {
    margin: 0 0 6px;
    font-size: 15px;
}

.message-card .preview {
    font-size: 13px;
    color: var(--ink-soft);
    line-height: 1.4;
}

.message-card .meta {
    font-size: 11px;
    color: rgba(21, 26, 33, 0.55);
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
}

.message-view {
    background: #fff;
    border-radius: 20px;
    padding: 20px;
    border: 1px solid rgba(21, 26, 33, 0.08);
}

.message-placeholder {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
    color: var(--ink-soft);
}

.message-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(21, 26, 33, 0.08);
}

.meta-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(21, 26, 33, 0.6);
}

.meta-value {
    font-size: 14px;
    font-weight: 600;
}

.message-subject {
    margin: 0 0 12px;
    font-family: "Fraunces", serif;
}

.message-body {
    font-size: 15px;
    line-height: 1.6;
    color: var(--ink);
    white-space: pre-wrap;
}

.message-actions {
    margin-top: 18px;
    display: flex;
    gap: 12px;
}

.btn {
    border: none;
    border-radius: 999px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    background: var(--accent);
    color: #fff;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 25px rgba(15, 118, 110, 0.18);
}

.btn.ghost {
    background: rgba(21, 26, 33, 0.08);
    color: var(--ink);
}

.btn.ghost:hover {
    box-shadow: none;
    background: rgba(21, 26, 33, 0.12);
}

.icon-btn {
    border: none;
    background: transparent;
    color: var(--ink-soft);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.empty-state {
    text-align: center;
    padding: 40px 16px;
    color: var(--ink-soft);
}

.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(20, 24, 33, 0.4);
    opacity: 0;
    pointer-events: none;
    transition: 200ms ease;
    z-index: 20;
}

.modal[aria-hidden="false"] {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: #fff;
    border-radius: 20px;
    padding: 24px;
    width: min(520px, 92vw);
    box-shadow: var(--shadow);
}

.modal-card.auth-card {
    width: min(420px, 92vw);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal-body input,
.modal-body textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid rgba(21, 26, 33, 0.15);
    font-family: inherit;
    font-size: 14px;
}

.modal-body textarea {
    resize: vertical;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 18px;
}

.compose-status {
    font-size: 13px;
    color: var(--ink-soft);
    min-height: 18px;
}

.auth-actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

@media (max-width: 960px) {
    .shell {
        grid-template-columns: 1fr;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .message-list {
        max-height: 320px;
    }
}

@media (max-width: 640px) {
    .app {
        padding: 20px;
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .topbar-actions {
        width: 100%;
        justify-content: flex-end;
    }
}