/* System font stack and CSS variables */
:root {
    /* Dark mode as default */
    --bg: #0f1115;
    --text: #e8e9ec;
    --muted: #b3b6bf;
    --border: #21242b;
    --elev: #151822;
    --primary: #6aa0ff;
    --primary-contrast: #0b0d12;
    --accent: #35d39e;
    --shadow: 0 1px 2px rgba(0,0,0,.5), 0 10px 24px rgba(0,0,0,.35);
    --radius: 12px;
    --radius-sm: 8px;
    --space-1: .25rem;
    --space-2: .5rem;
    --space-3: .75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --focus: rgba(106,160,255,.35);
    --maxw: 1120px;
    --header-h: 64px;
    --font-family: "Vazirmatn FD", "Vazirmatn", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

/* Respect system preference: if user prefers light, use light variables unless overridden */
@media (prefers-color-scheme: light) {
    :root {
        --bg: #ffffff;
        --text: #111111;
        --muted: #555555;
        --border: #e6e6e6;
        --elev: #f8f9fb;
        --primary: #0b5fff;
        --primary-contrast: #ffffff;
        --accent: #00a870;
        --shadow: 0 1px 3px rgba(0,0,0,.06), 0 6px 24px rgba(0,0,0,.06);
        --focus: rgba(11,95,255,.3);
    }
}

/* Explicit theme overrides via [data-theme] */
:root[data-theme="dark"] {
    --bg: #0f1115;
    --text: #e8e9ec;
    --muted: #b3b6bf;
    --border: #21242b;
    --elev: #151822;
    --primary: #6aa0ff;
    --primary-contrast: #0b0d12;
    --accent: #35d39e;
    --shadow: 0 1px 2px rgba(0,0,0,.5), 0 10px 24px rgba(0,0,0,.35);
    --focus: rgba(106,160,255,.35);
}

:root[data-theme="light"] {
    --bg: #ffffff;
    --text: #111111;
    --muted: #555555;
    --border: #e6e6e6;
    --elev: #f8f9fb;
    --primary: #0b5fff;
    --primary-contrast: #ffffff;
    --accent: #00a870;
    --shadow: 0 1px 3px rgba(0,0,0,.06), 0 6px 24px rgba(0,0,0,.06);
    --focus: rgba(11,95,255,.3);
}

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; animation: none !important; }
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    background: var(--bg);
    color: var(--text);
    line-height: 1.55;
}
.container { max-width: var(--maxw); padding: 0 var(--space-5); margin: 0 auto; }
.skip-link {
    position: absolute;
    top: 0; left: 0;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; border: 0;
    white-space: nowrap;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
}
.skip-link:focus { position: fixed; left: var(--space-5); top: var(--space-5); width: auto; height: auto; padding: var(--space-3) var(--space-4); background: var(--primary); color: var(--primary-contrast); border-radius: var(--radius-sm); z-index: 10000; }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 1000; height: var(--header-h);
    background: color-mix(in oklab, var(--bg), transparent 0%);
    border-bottom: 1px solid var(--border);
    backdrop-filter: saturate(120%) blur(6px);
    transition: transform .3s ease, background .2s ease, box-shadow .2s ease;
    display: flex; align-items: center;
}
.site-header.header--hidden { transform: translateY(calc(-1 * var(--header-h))); }
.site-header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; letter-spacing: .2px; }
.brand .wordmark { width: 80px; height: 24px; }
nav ul { list-style: none; padding: 0; margin: 0; display: flex; gap: var(--space-4); align-items: center; }
nav a { color: inherit; text-decoration: none; padding: .4rem .2rem; border-radius: 6px; }
nav a:focus-visible, nav a:hover { outline: none; background: var(--elev); }
.header-cta { display: flex; gap: .5rem; align-items: center; }

/* Icon button for theme toggle */
.icon-btn { 
    display: inline-grid; place-items: center; width: 36px; height: 36px; 
    border-radius: 999px; border: 1px solid var(--border); background: var(--elev); color: var(--text); 
    font-size: 16px; cursor: pointer; 
}
.icon-btn:hover { filter: brightness(1.03); }
.icon-btn:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--focus); }

/* Buttons */
.btn { appearance: none; border: 1px solid var(--border); background: var(--elev); color: var(--text); padding: .6rem .9rem; border-radius: 999px; cursor: pointer; text-decoration: none; display: inline-flex; gap: .5rem; align-items: center; font-weight: 600; }
.btn:hover { filter: brightness(1.02); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--focus); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-contrast); }
.btn-outline { background: transparent; }
.btn-lg { padding: .8rem 1.1rem; font-size: 1rem; }

/* Hero */
.hero { padding: calc(var(--space-7) + var(--header-h)) 0 var(--space-7); text-align: center; }
.hero h1 { font-size: clamp(1.8rem, 2.6vw + 1rem, 3rem); line-height: 1.15; margin: 0 0 var(--space-3) 0; }
.hero p { margin: 0 auto var(--space-5); max-width: 60ch; color: var(--muted); }
.hero-actions { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }

/* Founder's Note */
.founder-note { 
    margin: var(--space-6) auto 0; max-width: 60ch; text-align: left; 
    background: var(--elev); border: 1px solid var(--border); border-radius: var(--radius); 
    padding: var(--space-5); box-shadow: var(--shadow);
}
.founder-note blockquote { margin: 0 0 var(--space-3) 0; color: var(--text); }
.founder-note p { margin: 0 0 .75rem 0; }
.founder-note figcaption { color: var(--muted); font-weight: 600; }
/* Persian (fa) override: justify founder note text */
:lang(fa) .founder-note { text-align: justify; text-justify: inter-word; }

/* Use Vazirmatn for Persian */
:lang(fa) body,
:lang(fa) button,
:lang(fa) input,
:lang(fa) select,
:lang(fa) textarea,
:lang(fa) .btn,
:lang(fa) .price,
:lang(fa) .acc-btn { font-family: "Vazirmatn FD", "Vazirmatn", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }

/* Persian form layout tweaks */
:lang(fa) .form-grid { column-gap: 3rem; margin-left: 1.5rem; }

/* Sections */
section { scroll-margin-top: calc(var(--header-h) + 16px); }
.section { padding: var(--space-7) 0; }
.section h2 { font-size: clamp(1.4rem, 1.6vw + .8rem, 2rem); margin: 0 0 var(--space-4) 0; }
.muted { color: var(--muted); }

/* Tiers grid */
.tiers-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5); }
@media (max-width: 640px) { .tiers-grid { grid-template-columns: 1fr; } }

/* See all tiers button wrapper */
.see-all { margin-top: var(--space-5); display: flex; justify-content: center; }

/* Reveal animation for hidden tiers */
@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(12px) scale(.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.card.reveal { animation: fadeSlideIn .4s ease both; }
.card { background: var(--elev); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-4); position: relative; }
.card h3 { margin: 0; font-size: 1.15rem; }
.price { font-weight: 800; font-size: 1.4rem; }
.price .per { font-weight: 600; font-size: .95rem; color: var(--muted); margin-left: .25rem; }
.note { font-size: .9rem; color: var(--muted); }
.benefits { margin: 0; padding-left: 1.2rem; display: grid; gap: .4rem; }
.benefits li { margin: 0; }
.tier-anchor { position: absolute; top: .75rem; right: .75rem; font-size: .85rem; }
.tier-anchor a { color: var(--muted); text-decoration: none; }
.tier-anchor a:hover, .tier-anchor a:focus-visible { text-decoration: underline; }
/* Persian (RTL): place tier anchor on the left */
:lang(fa) .tier-anchor { right: auto; left: .75rem; }

/* Payment */
.payment-ctas { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-5); }
.cta-box { background: var(--elev); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-6); box-shadow: var(--shadow); display: grid; gap: var(--space-4); justify-items: start; }
.cta-actions { display: flex; gap: .75rem; flex-wrap: wrap; }
.legal-note { font-size: .95rem; color: var(--muted); margin-top: var(--space-3); }

/* FAQ */
.accordion { display: grid; gap: .5rem; }
.acc-item { background: var(--elev); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; color: var(--text); }
.acc-btn { width: 100%; text-align: left; padding: .9rem 1rem; background: transparent; border: none; display: flex; align-items: center; justify-content: space-between; font-weight: 600; cursor: pointer; color: var(--text); }
.acc-btn:focus-visible { outline: none; box-shadow: inset 0 0 0 3px var(--focus); }
.acc-panel { padding: 0 1rem; max-height: 0; overflow: hidden; opacity: 0; color: var(--muted); transition: max-height .3s ease, opacity .2s ease, padding .3s ease; }
.acc-item[aria-expanded="true"] .acc-panel { opacity: 1; padding: 0 1rem 1rem 1rem; }

/* Transparency */
.stack { display: grid; gap: .75rem; }

/* Footer */
footer { padding: var(--space-6) 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .95rem; }
footer a { color: inherit; }

/* Modal */
.modal { position: fixed; inset: 0; display: none; place-items: center; z-index: 2000; }
.modal[open] { display: grid; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.45); }
.modal-card { position: relative; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); width: min(680px, calc(100vw - 2*var(--space-5))); padding: var(--space-5); }
.modal-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-4); }
.modal-title { font-size: 1.15rem; font-weight: 700; margin: 0; }
.modal-close { background: var(--elev); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: .4rem .6rem; cursor: pointer; min-width: 36px; min-height: 36px; display: inline-grid; place-items: center; font-weight: 700; }
.modal-close:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--focus); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.form-grid { column-gap: var(--space-5); row-gap: var(--space-5); }
.form-grid .full { grid-column: 1 / -1; }
label { display: grid; gap: .4rem; font-weight: 600; font-size: .95rem; }
input, select { width: 100%; padding: .6rem .7rem; border-radius: 8px; border: 1px solid var(--border); background: var(--elev); color: var(--text); }

/* LTR fields for email, phone, amount, extension */
input[type="email"],
input[type="tel"],
input[type="number"],
input[name="extension"] {
    direction: ltr;
    text-align: left;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}
/* Radios/checkboxes should not stretch */
input[type="radio"], input[type="checkbox"] { width: auto; }

/* Hide optional fields by default - can be shown in future */
label:has(input[name="landline"]),
label:has(input[name="extension"]),
#specificTimeField,
.form-grid fieldset {
    display: none !important;
}
.btc-box { display: grid; gap: var(--space-4); grid-template-columns: 150px 1fr; align-items: center; }
@media (max-width: 640px) { .btc-box { grid-template-columns: 1fr; } .form-grid { grid-template-columns: 1fr; } }
.qr {
    width: 150px; height: 150px; border-radius: 12px; border: 1px solid var(--border); background: var(--elev); display: grid; place-items: center;
}
.qr img {
    border-radius: 12px;
    max-width: 100%;
    height: auto;
}
.addr { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }

/* Inline choice labels inside fieldsets */
.form-grid fieldset .choice { display: flex; align-items: center; gap: .5rem; }
.form-grid fieldset .choice > div { display: flex; align-items: center; }
.form-grid fieldset .choice span { white-space: nowrap; }

/* Radio row container */
.form-grid fieldset .choices-row {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: .75rem;
    flex-wrap: nowrap;
}

/* Fieldset styling */
.form-grid fieldset {
    width: 100%;
    border-radius: 11px;
    border: 1px solid var(--border);
    background: var(--elev);
    margin: 0;
}

.form-grid fieldset legend {
    color: var(--text);
    font-weight: 600;
    font-size: .95rem;
}

/* Radio button animations */
.form-grid fieldset .choice {
    transition: all 0.3s ease;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
}

.form-grid fieldset .choice:hover {
    background: var(--elev);
    transform: translateY(-1px);
}

.form-grid fieldset .choice input[type="radio"]:checked + span {
    color: var(--primary);
    font-weight: 700;
}

/* Specific time field animation */
#specificTimeField {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(-8px);
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

#specificTimeField.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    max-height: 200px;
    overflow: visible;
    padding: 0;
}

/* Utility */
.hide { display: none !important; }
.icon { width: 18px; height: 18px; }

/* Template-specific styles */
.benefits .icon {
    vertical-align: -3px;
    margin-right: .35rem;
}

.payment-options {
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-actions {
    display: flex;
    gap: .75rem;
    align-items: center;
    flex-wrap: wrap;
}

/* Notification styles */
.notification {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    max-width: 24rem;
    padding: var(--space-4);
    background: var(--elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease-out;
}

.notification--success {
    background: #1b5e20;
    border-color: #4caf50;
    color: #e8f5e8;
}

.notification--error {
    background: #d32f2f;
    border-color: #f44336;
    color: #ffebee;
}

.notification-content {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.notification-content span {
    flex: 1;
    font-weight: 500;
}

.notification-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-size: 1.25rem;
    font-weight: bold;
    padding: 0;
    margin: 0;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.notification-close:hover {
    opacity: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Bank info modal styles */
.bank-info-content {
    padding: var(--space-4) 0;
    font-family: var(--font-family);
}

.bank-details {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.bank-field {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    background: var(--elev);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.bank-field label {
    font-weight: 600;
    color: var(--muted);
    font-size: 0.9rem;
}

.bank-field span {
    font-family: 'Courier New', monospace;
    font-weight: 500;
    color: var(--text);
}

.bank-field .copyable {
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.bank-field .copyable:hover {
    background: rgba(106, 160, 255, 0.1);
    color: var(--primary);
}

.field-with-copy {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.copy-btn {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
}

.copy-btn:hover {
    background: rgba(106, 160, 255, 0.1);
    color: var(--primary);
}

.copy-btn:active {
    transform: scale(0.95);
}

.copy-btn svg {
    width: 16px;
    height: 16px;
}

.bank-note {
    padding: var(--space-4);
    background: rgba(53, 211, 158, 0.1);
    border: 1px solid rgba(53, 211, 158, 0.3);
    border-radius: var(--radius);
    color: var(--accent);
}

.bank-note p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border);
    margin-top: var(--space-4);
}

/* Payment Accounts Modal Styles */
.payment-accounts-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.payment-account-item {
    background: var(--elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-4);
    transition: all 0.2s ease;
}

.payment-account-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.payment-account-item h4 {
    margin: 0 0 var(--space-3) 0;
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.account-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row .label {
    font-weight: 500;
    color: var(--muted);
    min-width: 120px;
}

.detail-row .value {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: var(--text);
    word-break: break-all;
    text-align: left;
    flex: 1;
    margin-left: var(--space-3);
}

.payment-instructions {
    background: color-mix(in oklab, var(--primary), transparent 95%);
    border: 1px solid color-mix(in oklab, var(--primary), transparent 30%);
    border-radius: var(--radius);
    padding: var(--space-4);
    margin-top: var(--space-4);
}

.payment-instructions p {
    margin: 0 0 var(--space-3) 0;
    font-weight: 600;
    color: var(--primary);
}

.payment-instructions ul {
    margin: 0;
    padding-left: var(--space-4);
}

.payment-instructions li {
    margin-bottom: var(--space-2);
    color: var(--text);
}

.payment-instructions li:last-child {
    margin-bottom: 0;
}

/* Responsive adjustments for payment accounts */
@media (max-width: 768px) {
    .detail-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-1);
    }
    
    .detail-row .label {
        min-width: auto;
        font-size: 0.9rem;
    }
    
    .detail-row .value {
        margin-left: 0;
        font-size: 0.9rem;
    }
    
    .payment-account-item {
        padding: var(--space-3);
    }
}