:root {
    --color-bg: #f6f7f9;
    --color-surface: #ffffff;
    --color-text: #1f2933;
    --color-muted: #626f7f;
    --color-border: #d9dee7;
    --color-primary: #1769aa;
    --color-primary-dark: #0f4e80;
    --color-primary-soft: #eef6fc;
    --color-danger-bg: #fff1f0;
    --color-danger-text: #9f1d1d;
    --color-danger-border: #f0b8b8;
    --color-success-bg: #edf8f1;
    --color-success-text: #1f6b3b;
    --color-success-border: #b7dfc4;
    --color-warning-bg: #fff7e6;
    --color-warning-text: #7a4a00;
    --color-warning-border: #f1d19b;
    --shadow-soft: 0 8px 24px rgba(31, 41, 51, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    min-height: 100%;
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

button,
input,
textarea {
    font: inherit;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

.container {
    width: min(100% - 32px, 960px);
    margin: 0 auto;
}

.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    color: var(--color-text);
    font-size: 20px;
    font-weight: 700;
    white-space: nowrap;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--color-muted);
    font-size: 14px;
}

.site-nav form {
    margin: 0;
}

.nav-user {
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-button {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--color-primary);
    cursor: pointer;
    font: inherit;
}

.nav-button:hover,
.nav-button:focus {
    text-decoration: underline;
}

.page-content {
    padding: 32px 0;
}

.panel {
    width: 100%;
    max-width: 640px;
    padding: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
}

.panel h1 {
    margin: 0 0 12px;
    font-size: 28px;
    line-height: 1.2;
}

.panel p,
.panel-note {
    margin: 0;
    color: var(--color-muted);
    overflow-wrap: anywhere;
}

.auth-panel {
    max-width: 480px;
}

.form {
    display: grid;
    gap: 18px;
    margin-top: 20px;
}

.field {
    display: grid;
    gap: 6px;
}

.field label {
    color: var(--color-text);
    font-size: 14px;
    font-weight: 600;
}

.field input,
.field textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
}

.field input {
    min-height: 44px;
}

.field textarea {
    min-height: 120px;
    resize: vertical;
}

.field input:focus,
.field textarea:focus {
    border-color: var(--color-primary);
    outline: 3px solid rgba(23, 105, 170, 0.16);
}

.field-error {
    margin: 0;
    color: var(--color-danger-text);
    font-size: 14px;
}

.alert {
    margin-top: 16px;
    padding: 12px;
    border: 1px solid transparent;
    border-radius: 6px;
    overflow-wrap: anywhere;
}

.alert-error {
    border: 1px solid var(--color-danger-border);
    background: var(--color-danger-bg);
    color: var(--color-danger-text);
}

.alert-success {
    border: 1px solid var(--color-success-border);
    background: var(--color-success-bg);
    color: var(--color-success-text);
}

.button {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border: 1px solid var(--color-primary);
    border-radius: 6px;
    background: var(--color-primary);
    color: #ffffff;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    line-height: 1.2;
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
}

.button:hover,
.button:focus {
    background: var(--color-primary-dark);
    color: #ffffff;
    text-decoration: none;
}

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

.button-secondary:hover,
.button-secondary:focus {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
}

.button-danger {
    border-color: var(--color-danger-border);
    background: var(--color-danger-bg);
    color: var(--color-danger-text);
}

.button-danger:hover,
.button-danger:focus {
    border-color: var(--color-danger-text);
    background: var(--color-danger-text);
    color: #ffffff;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.panel-note {
    margin-top: 18px;
    font-size: 14px;
}

.page-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.page-heading h1 {
    margin: 0 0 6px;
    font-size: 30px;
    line-height: 1.2;
}

.page-heading p {
    margin: 0;
    color: var(--color-muted);
}

.reminder-section {
    margin-top: 24px;
}

.reminder-section h2 {
    margin: 0 0 12px;
    font-size: 20px;
}

.reminder-list {
    display: grid;
    gap: 12px;
}

.reminder-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-surface);
    box-shadow: 0 1px 2px rgba(31, 41, 51, 0.04);
}

.reminder-item form {
    margin: 0;
}

.reminder-item-sent {
    opacity: 0.82;
}

.reminder-main {
    display: grid;
    gap: 8px;
    min-width: 0;
}

.reminder-title-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.reminder-title-row h3 {
    min-width: 0;
    margin: 0;
    font-size: 17px;
    line-height: 1.3;
    overflow-wrap: anywhere;
}

.reminder-main p {
    margin: 0;
    color: var(--color-text);
    overflow-wrap: anywhere;
}

.reminder-meta {
    color: var(--color-muted);
    font-size: 14px;
}

.empty-state {
    display: grid;
    gap: 10px;
    align-items: start;
    padding: 18px;
    border: 1px dashed var(--color-border);
    border-radius: 8px;
    background: var(--color-surface);
    color: var(--color-muted);
}

.empty-state strong {
    color: var(--color-text);
}

.empty-state span {
    overflow-wrap: anywhere;
}

.empty-state .button {
    width: fit-content;
    margin-top: 4px;
}

.status-badge {
    flex: 0 0 auto;
    padding: 3px 8px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.4;
    white-space: nowrap;
}

.status-badge-pending {
    border-color: var(--color-warning-border);
    background: var(--color-warning-bg);
    color: var(--color-warning-text);
}

.status-badge-sent {
    border-color: var(--color-success-border);
    background: var(--color-success-bg);
    color: var(--color-success-text);
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 24px, 960px);
    }

    .page-content {
        padding: 24px 0;
    }

    .panel {
        padding: 20px;
    }

    .header-inner,
    .site-nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .site-nav {
        width: 100%;
        gap: 10px;
        padding-bottom: 14px;
    }

    .site-nav form,
    .site-nav .nav-button {
        width: 100%;
        text-align: left;
    }

    .nav-user {
        max-width: calc(100vw - 24px);
    }

    .page-heading,
    .reminder-item {
        flex-direction: column;
    }

    .page-heading {
        gap: 14px;
        margin-bottom: 20px;
    }

    .page-heading h1 {
        font-size: 26px;
    }

    .page-heading .button,
    .actions .button,
    .reminder-item .button,
    .reminder-item form {
        width: 100%;
    }

    .reminder-title-row {
        flex-direction: column;
        gap: 6px;
    }

    .empty-state .button {
        width: 100%;
    }
}