/* ==========================================================================
   SSE Forms — Core Styles
   ========================================================================== */

.sse-form {
    --sse-bg: #ffffff;
    --sse-text: #333333;
    --sse-btn: #0073aa;
    --sse-btn-text: #ffffff;
    --sse-radius: 6px;
    --sse-border: #d0d0d0;
    --sse-focus: #0073aa;
    --sse-error: #d63638;
    --sse-success: #00a32a;

    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--sse-text);
    box-sizing: border-box;
}

.sse-form *,
.sse-form *::before,
.sse-form *::after {
    box-sizing: inherit;
}

.sse-form__inner {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sse-form__fields {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.sse-form__field {
    flex: 1 1 180px;
    min-width: 0;
}

.sse-form__input {
    display: block;
    width: 100%;
    padding: 10px 14px;
    font-size: 15px;
    line-height: 1.4;
    color: var(--sse-text);
    background: var(--sse-bg);
    border: 1px solid var(--sse-border);
    border-radius: var(--sse-radius);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    -webkit-appearance: none;
}

.sse-form__input:focus {
    border-color: var(--sse-focus);
    box-shadow: 0 0 0 2px rgba(0, 115, 170, 0.15);
}

.sse-form__input.sse-has-error {
    border-color: var(--sse-error);
    box-shadow: 0 0 0 2px rgba(214, 54, 56, 0.15);
}

.sse-form__submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--sse-btn-text);
    background: var(--sse-btn);
    border: none;
    border-radius: var(--sse-radius);
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
    -webkit-appearance: none;
    line-height: 1.4;
    align-self: flex-start;
}

.sse-form__submit:hover {
    opacity: 0.9;
}

.sse-form__submit:active {
    transform: scale(0.98);
}

.sse-form__submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Spinner */
.sse-form__spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: sse-spin 0.6s linear infinite;
}

.sse-form--loading .sse-form__spinner {
    display: block;
}

.sse-form--loading .sse-form__submit-text {
    opacity: 0.7;
}

@keyframes sse-spin {
    to { transform: rotate(360deg); }
}

/* Messages */
.sse-form__message {
    font-size: 13px;
    min-height: 0;
}

.sse-form__message.sse-msg--error {
    color: var(--sse-error);
}

.sse-form__message.sse-msg--info {
    color: var(--sse-text);
    opacity: 0.7;
}

/* Success state */
.sse-form__success {
    display: none;
    text-align: center;
    padding: 20px 16px;
    animation: sse-fade-in 0.3s ease;
}

.sse-form--success .sse-form__inner {
    display: none;
}

.sse-form--success .sse-form__success {
    display: block;
}

.sse-form__success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    border-radius: 50%;
    background: var(--sse-success);
    color: #fff;
    animation: sse-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.sse-form__success-text {
    margin: 0;
    font-size: 15px;
    color: var(--sse-text);
}

@keyframes sse-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes sse-pop {
    0%   { transform: scale(0); }
    100% { transform: scale(1); }
}

/* ==========================================================================
   Preset: Minimal
   ========================================================================== */

.sse-form--minimal {
    --sse-border: transparent;
}

.sse-form--minimal .sse-form__input {
    border: none;
    border-bottom: 2px solid #ddd;
    border-radius: 0;
    padding-left: 2px;
    padding-right: 2px;
    background: transparent;
}

.sse-form--minimal .sse-form__input:focus {
    border-bottom-color: var(--sse-btn);
    box-shadow: none;
}

.sse-form--minimal .sse-form__submit {
    border-radius: 2px;
}

/* ==========================================================================
   Preset: Clean (default)
   ========================================================================== */

.sse-form--clean {
    background: var(--sse-bg);
    padding: 24px;
    border-radius: var(--sse-radius);
    border: 1px solid #e5e5e5;
}

/* ==========================================================================
   Preset: Branded
   ========================================================================== */

.sse-form--branded {
    background: var(--sse-bg);
    padding: 32px 28px;
    border-radius: calc(var(--sse-radius) * 2);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.sse-form--branded .sse-form__submit {
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
    border-radius: calc(var(--sse-radius) * 1.5);
}

/* ==========================================================================
   Preset: Single Line
   ========================================================================== */

.sse-form--single-line .sse-form__inner {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 0;
    position: relative;
}

.sse-form--single-line .sse-form__inner > input[type="hidden"],
.sse-form--single-line .sse-form__inner > [aria-hidden="true"] {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}

.sse-form--single-line .sse-form__fields {
    flex: 1 1 0%;
    flex-wrap: nowrap;
    align-items: center;
    gap: 2px;
    min-width: 0;
}

.sse-form--single-line .sse-form__field {
    flex: 1 1 0%;
    min-width: 0;
}

.sse-form--single-line .sse-form__input,
.sse-form--single-line .sse-form__submit {
    height: 36px;
    line-height: 36px;
    padding-top: 0;
    padding-bottom: 0;
    box-sizing: border-box;
    vertical-align: middle;
}

.sse-form--single-line .sse-form__input {
    border: 1px solid var(--sse-border);
    border-radius: var(--sse-radius);
    padding-left: 4px;
    padding-right: 4px;
    min-width: 0;
}

.sse-form--single-line .sse-form__submit {
    border-radius: var(--sse-radius);
    white-space: nowrap;
    flex-shrink: 0;
    padding-left: 5px;
    padding-right: 5px;
    font-size: 14px;
    margin-left: 2px;
}

.sse-form--single-line .sse-form__message {
    flex-basis: 100%;
}

@media (max-width: 480px) {
    .sse-form--single-line .sse-form__inner {
        flex-direction: column;
        gap: 8px;
    }

    .sse-form--single-line .sse-form__fields {
        flex-wrap: wrap;
        gap: 8px;
    }

    .sse-form--single-line .sse-form__submit {
        width: 100%;
        margin-left: 0;
    }
}

/* ==========================================================================
   Dark mode
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    .sse-form--clean,
    .sse-form--branded {
        border-color: #3a3a3a;
    }

    .sse-form__input {
        --sse-border: #555;
    }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 480px) {
    .sse-form__fields {
        flex-direction: column;
    }

    .sse-form__field {
        flex: 1 1 auto;
    }

    .sse-form--branded .sse-form__submit,
    .sse-form--clean .sse-form__submit {
        width: 100%;
    }
}

/* ==========================================================================
   Manage Subscriptions
   ========================================================================== */

.sse-manage {
    max-width: 600px;
}

.sse-manage__list {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.sse-manage__item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
}

.sse-manage__item:last-child {
    border-bottom: none;
}

.sse-manage__item label {
    font-weight: 500;
    display: block;
}

.sse-manage__desc {
    font-size: 13px;
    color: #666;
    margin: 2px 0 0;
}

.sse-manage__email-lookup {
    margin-bottom: 20px;
}

.sse-manage__email-lookup input {
    padding: 8px 12px;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-right: 8px;
}

.sse-manage__btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: #0073aa;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.sse-manage__btn:hover {
    opacity: 0.9;
}

.sse-manage__message {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: 4px;
    font-size: 14px;
}

.sse-manage__message--success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.sse-manage__message--error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}