/**
 * Signup — page-specific layout. Design system from includes/theme.css via
 * head-public.php. "The Periodical" redesign 2026-06-23. Markup/classes/JS
 * preserved (handleSignup → /api/signup.php, selectTier, togglePassword,
 * validateForm; field names + autocomplete intact).
 */
:root { --border: rgba(0,55,109,0.16); --text-light: #3f4e5e; --slate: #5b6b7a; --error: #c0432f; --success: #10a077; }

/* Page head */
.hero { max-width: 1100px; margin: 0 auto; padding: 50px 28px 26px; border-bottom: 1px solid var(--rule); }
.hero-content { max-width: none; margin: 0; }
.hero h1 { font-family: var(--display); font-weight: 800; font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.03em; color: var(--navy); line-height: 1; margin-bottom: 12px; }
.hero p { font-family: var(--body); font-size: 1.14rem; color: var(--ink); opacity: 1; }

.container { max-width: 1100px; margin: 0 auto; padding: 48px 28px; }
.signup-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }

/* Form card */
.form-card { background: var(--sheet); border: 1px solid var(--rule); border-radius: 16px; padding: 36px; }
.form-card h2 { font-family: var(--display); color: var(--navy); font-size: 1.6rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; }
.form-card .subtitle { color: var(--muted); margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-family: var(--body); font-weight: 600; color: var(--navy); margin-bottom: 7px; font-size: 0.92rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 13px 16px; border: 1px solid var(--rule); border-radius: 8px; font-size: 1rem; font-family: var(--body); color: var(--ink); transition: border-color 0.2s, box-shadow 0.2s; background: var(--sheet); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(16,160,119,0.12); }
.form-group input.error { border-color: var(--error); }
.form-group .error-message { color: var(--error); font-size: 0.88rem; margin-top: 5px; display: none; }
.form-group .error-message.show { display: block; }
.password-toggle { position: relative; }
.password-toggle button { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--slate); cursor: pointer; font-size: 1.1rem; }
.checkbox-group { display: flex; align-items: flex-start; gap: 10px; }
.checkbox-group input[type="checkbox"] { width: auto; margin-top: 4px; accent-color: var(--green); }
.checkbox-group label { font-weight: normal; color: var(--ink); font-size: 0.92rem; }
.checkbox-group a { color: var(--green-dark); text-decoration: none; font-weight: 600; }
.btn-submit { width: 100%; padding: 15px; background: var(--green); color: #fff; border: none; border-radius: 8px; font-family: var(--body); font-size: 1.05rem; font-weight: 600; cursor: pointer; transition: background 0.2s, transform 0.2s; }
.btn-submit:hover { background: var(--green-dark); transform: translateY(-2px); }
.btn-submit:disabled { background: var(--slate); cursor: not-allowed; transform: none; }
.login-link { text-align: center; margin-top: 22px; color: var(--muted); font-size: 0.95rem; }
.login-link a { color: var(--green-dark); font-weight: 600; text-decoration: none; }

/* Benefits sidebar */
.benefits-sidebar { padding: 6px 0; }
.benefits-sidebar h3 { font-family: var(--display); color: var(--navy); font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 26px; }
.benefit-item { display: flex; gap: 15px; margin-bottom: 22px; }
.benefit-icon { width: 46px; height: 46px; background: #e7eef3; color: var(--green-dark); border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.benefit-content h4 { font-family: var(--display); color: var(--navy); font-size: 1.08rem; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 4px; }
.benefit-content p { color: var(--muted); font-size: 0.93rem; }

/* Tier selector */
.tier-selector { background: var(--paper); border: 1px solid var(--rule); border-radius: 14px; padding: 22px; margin-top: 28px; }
.tier-selector h4 { font-family: var(--display); color: var(--navy); font-size: 1.05rem; font-weight: 700; margin-bottom: 14px; }
.tier-options { display: flex; flex-direction: column; gap: 10px; }
.tier-option { display: flex; align-items: center; gap: 12px; padding: 14px; background: var(--sheet); border: 1px solid var(--rule); border-radius: 10px; cursor: pointer; transition: border-color 0.2s, background 0.2s; position: relative; }
.tier-option:hover { border-color: var(--green); }
.tier-option.selected { border-color: var(--green); border-width: 2px; background: #f4faf7; }
.tier-option input { accent-color: var(--green); }
.tier-info { flex: 1; }
.tier-name { font-family: var(--display); font-weight: 700; color: var(--navy); letter-spacing: -0.01em; }
.tier-desc { font-size: 0.84rem; color: var(--muted); }
.tier-price { font-family: var(--display); font-weight: 700; color: var(--green-dark); }
.tier-custom { border-style: dashed; }
.tier-custom:hover { border-color: var(--navy); }
.tier-custom .tier-price { color: var(--navy); }
.tier-option.tier-popular { border-color: var(--green); }
.tier-popular-badge { position: absolute; top: -10px; right: 12px; background: var(--green); color: #fff; font-family: var(--mono); font-size: 0.6rem; font-weight: 500; padding: 3px 10px; border-radius: 99px; text-transform: uppercase; letter-spacing: 0.06em; }

/* Success state */
.success-message { display: none; text-align: center; padding: 30px 10px; }
.success-message.show { display: block; }
.success-icon { width: 76px; height: 76px; background: var(--green); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2.4rem; margin: 0 auto 22px; }
.success-message h2 { font-family: var(--display); color: var(--navy); margin-bottom: 14px; letter-spacing: -0.02em; }
.success-message p { color: var(--muted); margin-bottom: 24px; }

@media (max-width: 900px) { .signup-layout { grid-template-columns: 1fr; gap: 32px; } .benefits-sidebar { order: 2; } .form-card { order: 1; } }
@media (max-width: 768px) { .form-card { padding: 28px 22px; } }