:root {
    --background: #f7f9fa;
    --surface: #ffffff;
    --surface-soft: #f9fbfc;
    --text: #17343c;
    --text-secondary: #4f6167;
    --text-muted: #6d7476;
    --border: #d6e2e5;
    --neutral-button: #e8eef0;
    --neutral-button-text: #17343c;
    --primary-button: #37b7c3;
    --primary-button-text: #ffffff;
    --destructive: #f44336;
    --overlay-start: rgba(55, 183, 195, 0.16);
    --overlay-end: rgba(7, 25, 82, 0.08);
    --shadow: rgba(11, 37, 48, 0.16);
}

body[data-mode="dark"] {
    --background: #0d1c22;
    --surface: #12262d;
    --surface-soft: #102129;
    --text: #f4fbfc;
    --text-secondary: #d1e0e4;
    --text-muted: #9db1b8;
    --border: #34515c;
    --neutral-button: #22373f;
    --neutral-button-text: #f4fbfc;
    --primary-button: #37b7c3;
    --primary-button-text: #ffffff;
    --destructive: #d65d57;
    --overlay-start: rgba(6, 12, 16, 0.8);
    --overlay-end: rgba(18, 38, 45, 0.92);
    --shadow: rgba(0, 0, 0, 0.36);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top, var(--overlay-start), transparent 42%),
        linear-gradient(180deg, var(--background) 0%, var(--overlay-end) 100%);
    color: var(--text);
}

body[data-embed="1"] {
    background: var(--background);
}

.support-shell {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 32px 18px 28px;
}

body[data-embed="1"] .support-shell {
    padding: 22px 14px 28px;
}

.support-card {
    position: relative;
    width: min(100%, 520px);
    border-radius: 28px;
    padding: 22px;
    background: var(--surface);
    box-shadow: 0 16px 24px var(--shadow);
}

.support-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.support-brand {
    margin: 0;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.switcher {
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    background-color: var(--surface-soft);
    border-radius: 999px;
    padding: 3px;
    border: 1px solid var(--border);
}

.switcher-button {
    min-width: 36px;
    padding: 5px 8px;
    border-radius: 999px;
    align-items: center;
    justify-content: center;
    border: 0;
    background: transparent;
    cursor: pointer;
    display: inline-flex;
}

.switcher-button-active {
    background-color: rgba(55, 183, 195, 0.12);
}

.switcher-button-text {
    font-size: 10px;
    font-weight: 800;
    color: var(--text-muted);
}

.switcher-button-text-active {
    color: #3b8193;
}

.support-title {
    margin: 14px 0 0;
    font-size: 19px;
    line-height: 24px;
    font-weight: 400;
}

.support-subtitle {
    margin: 8px 0 0;
    font-size: 15px;
    line-height: 22px;
    color: var(--text-secondary);
}

.field-label {
    display: block;
    margin-top: 18px;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
}

.text-input {
    width: 100%;
    min-height: 52px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: var(--surface-soft);
    padding: 14px 16px;
    font: inherit;
    color: var(--text);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.text-input::placeholder {
    color: var(--text-muted);
}

.text-input:focus {
    border-color: var(--primary-button);
    box-shadow: 0 0 0 4px rgba(55, 183, 195, 0.12);
}

.text-area {
    min-height: 148px;
    resize: vertical;
}

.input-error {
    border-color: var(--destructive);
}

.helper-row {
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.helper-text {
    margin: 0;
    font-size: 12px;
    color: var(--text-muted);
}

.helper-text-error {
    color: var(--destructive);
}

.error-text {
    margin: 8px 0 0;
    font-size: 13px;
    color: var(--destructive);
}

.status-message {
    margin: 18px 0 0;
    padding: 12px 14px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 20px;
}

.status-success {
    background: rgba(29, 127, 71, 0.12);
    color: #176b36;
}

body[data-mode="dark"] .status-success {
    background: rgba(42, 157, 98, 0.18);
    color: #d5f5e2;
}

.status-error {
    background: rgba(244, 67, 54, 0.12);
    color: #9d2c22;
}

body[data-mode="dark"] .status-error {
    background: rgba(214, 93, 87, 0.18);
    color: #ffd8d5;
}

.actions {
    display: flex;
    gap: 12px;
    margin-top: 22px;
}

.secondary-button,
.primary-button {
    flex: 1;
    min-height: 48px;
    border: 0;
    border-radius: 30px;
    font: inherit;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.18s ease, opacity 0.18s ease;
}

.secondary-button {
    background: var(--neutral-button);
    color: var(--neutral-button-text);
    border: 1px solid var(--border);
}

.primary-button {
    background: var(--primary-button);
    color: var(--primary-button-text);
}

.secondary-button:hover,
.primary-button:hover {
    transform: translateY(-1px);
}

.primary-button-disabled,
.primary-button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

@media (max-width: 640px) {
    .support-shell {
        padding: 22px 16px 20px;
    }

    .support-card {
        padding: 20px 18px;
    }

    .support-header-row {
        align-items: flex-start;
    }
}