/* ─── Reset & Base ──────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #f8f9fc;
    --color-surface: #ffffff;
    --color-text: #1a1a2e;
    --color-text-muted: #6c757d;
    --color-primary: #4a6cf7;
    --color-primary-hover: #3b5de7;
    --color-border: #e2e8f0;
    --color-error: #e74c3c;
    --color-error-bg: #fdf0ef;
    --color-success: #27ae60;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 24px rgba(0,0,0,0.08);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    --transition: 150ms ease;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ─── Layout ────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1rem;
}

main.container {
    flex: 1;
    padding-top: 1.5rem;
    padding-bottom: 3rem;
}

/* ─── Header ────────────────────────────────────────────── */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.logo {
    font-size: 1.5rem;
    text-decoration: none;
}

.site-header nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.site-header nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition);
}

.site-header nav a:hover {
    color: var(--color-text);
}

.btn-link {
    color: var(--color-primary) !important;
}

/* ─── Footer ────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
    line-height: 1.4;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 2px 8px rgba(74, 108, 247, 0.3);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-secondary:hover {
    background: var(--color-bg);
}

/* ─── Form Page ─────────────────────────────────────────── */
.form-page {
    display: flex;
    justify-content: center;
    padding: 1rem 0;
}

.form-card {
    width: 100%;
    max-width: 520px;
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
}

.form-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    line-height: 1.3;
}

.form-intro {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-bottom: 1.75rem;
    line-height: 1.6;
}

/* ─── Form Elements ─────────────────────────────────────── */
.greeting-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    position: relative;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-group textarea {
    resize: vertical;
    min-height: 5rem;
    line-height: 1.5;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #adb5bd;
}

.char-count {
    text-align: right;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.char-count.warn {
    color: var(--color-error);
    font-weight: 600;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ─── Alert ─────────────────────────────────────────────── */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid #f5c6cb;
}

/* ─── Success Card ──────────────────────────────────────── */
.success-card {
    text-align: center;
}

.success-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.success-card h1 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.success-card p {
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.text-muted {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.success-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

/* ─── Cloud Page ────────────────────────────────────────── */
.cloud-page {
    padding: 0.5rem 0;
}

.cloud-page h1 {
    font-family: var(--font-display);
    font-size: 1.5rem;
}

/* ─── Entries Page ──────────────────────────────────────── */
.entries-page h1 {
    font-family: var(--font-display);
    font-size: 1.5rem;
}

.entries-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.entry-card {
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    border: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

.entry-message {
    font-weight: 600;
    font-size: 1rem;
    flex: 1;
    min-width: 200px;
}

.entry-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.entry-name {
    font-weight: 500;
    color: var(--color-text);
}

.entry-delete {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

.btn-delete {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all var(--transition);
}

.btn-delete:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--color-text-muted);
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 600px) {
    .form-card {
        padding: 1.5rem;
        border-radius: var(--radius-sm);
    }

    .form-title {
        font-size: 1.5rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .success-actions {
        flex-direction: column;
    }

    .success-actions .btn {
        width: 100%;
    }

    .cloud-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .cloud-header .btn {
        width: 100%;
        text-align: center;
    }

    .entry-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .entry-delete {
        position: static;
        align-self: flex-end;
    }

    .site-header nav {
        gap: 0.625rem;
    }

    .site-header nav a {
        font-size: 0.8125rem;
    }
}

@media (max-width: 380px) {
    .container {
        padding: 0 0.75rem;
    }

    .form-card {
        padding: 1.25rem;
    }

    .form-title {
        font-size: 1.375rem;
    }
}