/* ==============================================
   K-market Invoice — Premium Light UI (Green)
   ============================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
    /* Accent — K-market Green */
    --accent: #10b981;
    --accent-dark: #059669;
    --accent-light: #34d399;
    --accent-glow: rgba(16, 185, 129, 0.18);
    /* Surfaces — Light Theme */
    --bg: #f0f4f3;
    --bg-card: #ffffff;
    --bg-input: #f5f7f6;
    --bg-input-hover: #eef1f0;
    --bg-input-focus: #e8eeec;
    /* Text */
    --text-1: #1a2e28;
    --text-2: #4a6358;
    --text-3: #8ca098;
    /* Misc */
    --border: rgba(0,0,0,0.08);
    --border-focus: rgba(16,185,129,0.5);
    --success: #10b981;
    --error: #ef4444;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 8px;
    --ease: cubic-bezier(.4,0,.2,1);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text-1);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ── Animated BG ── */
.page-bg {
    position: fixed; inset: 0; z-index: -1;
    background:
        radial-gradient(ellipse 80% 60% at 10% 40%, rgba(16,185,129,0.06) 0%, transparent 60%),
        radial-gradient(ellipse 60% 80% at 90% 20%, rgba(52,211,153,0.04) 0%, transparent 60%),
        radial-gradient(ellipse 70% 50% at 50% 90%, rgba(5,150,105,0.05) 0%, transparent 60%),
        var(--bg);
}

/* ── Page Wrapper ── */
.page-wrapper {
    width: 100%;
    max-width: 740px;
    margin: 0 auto;
    padding: 32px 20px 16px;
    animation: fadeUp .55s var(--ease);
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Language Bar ── */
.lang-bar {
    display: flex; justify-content: center; gap: 6px;
    margin-bottom: 28px;
}

.lang-btn {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 8px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 50px;
    color: var(--text-2);
    font-family: 'Inter', sans-serif;
    font-size: .82rem; font-weight: 500;
    cursor: pointer;
    transition: all .25s var(--ease);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.lang-btn:hover { border-color: var(--accent); color: var(--text-1); }
.lang-btn.active {
    border-color: var(--accent);
    color: var(--accent-dark);
    background: rgba(16,185,129,0.08);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.lang-flag { font-size: 1.15rem; }

/* ── Main Card ── */
.card-main {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 32px 32px;
    box-shadow:
        0 4px 24px rgba(0,0,0,0.06),
        0 1px 3px rgba(0,0,0,0.04),
        0 0 40px rgba(16,185,129,.04);
}

/* ── Brand ── */
.brand-header { text-align: center; margin-bottom: 4px; }

.brand-logo {
    display: inline-block;
    font-size: 2rem; font-weight: 800;
    letter-spacing: -.03em;
    margin-bottom: 10px;
}
.logo-k { color: var(--accent); }
.logo-dash { color: var(--text-3); }
.logo-market { color: var(--text-1); }

.page-title {
    font-size: 1.15rem; font-weight: 600;
    color: var(--text-2);
    margin-bottom: 4px;
}
.page-desc {
    font-size: .82rem; color: var(--text-3);
    max-width: 420px; margin: 0 auto;
}

.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 20px 0 24px;
}

/* ── Bill / Order Info Section ── */
.bill-section {
    background: var(--bg-input);
    border-radius: var(--radius-xs);
    padding: 18px 20px;
    margin-bottom: 0;
}
.bill-header {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 14px;
}
.bill-icon {
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(16,185,129,.1);
    border-radius: var(--radius-xs);
    color: var(--accent);
    flex-shrink: 0;
}
.bill-title {
    font-size: .92rem; font-weight: 700;
    color: var(--text-1);
    margin-bottom: 2px;
}
.bill-code {
    font-size: .78rem; color: var(--text-3);
}
.bill-code strong { color: var(--accent-dark); }

.bill-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .82rem;
}
.bill-table th {
    text-align: left;
    padding: 8px 10px;
    background: rgba(16,185,129,.06);
    color: var(--text-2);
    font-weight: 600;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    border-bottom: 2px solid var(--border);
}
.bill-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    color: var(--text-1);
}
.bill-table tbody tr:hover {
    background: rgba(16,185,129,.03);
}
.bill-table tfoot td {
    padding: 10px 10px;
    font-weight: 700;
    border-bottom: none;
    border-top: 2px solid var(--accent);
}
.bill-total {
    color: var(--accent-dark);
    font-size: .95rem;
}
.text-center { text-align: center; }
.text-right { text-align: right; }

.invoice-form-title {
    font-size: .85rem; font-weight: 700;
    color: var(--accent-dark);
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: 20px;
    display: flex; align-items: center; gap: 8px;
}
.invoice-form-title::before {
    content: '';
    width: 3px; height: 16px;
    background: var(--accent);
    border-radius: 2px;
}

/* ── Form Grid ── */
.form-row {
    display: flex; gap: 16px;
    margin-bottom: 20px;
}
.form-col { flex: 1; min-width: 0; }
.form-col.full { flex-basis: 100%; }

/* ── Fields ── */
.field-label {
    display: block;
    font-size: .75rem; font-weight: 600;
    color: var(--text-2);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 6px;
}

.field-wrap {
    position: relative; display: flex; align-items: center;
}

.field-icon {
    position: absolute; left: 12px;
    display: flex; color: var(--text-3);
    transition: color .25s var(--ease);
    pointer-events: none; z-index: 1;
}

.field-input {
    width: 100%;
    padding: 12px 12px 12px 42px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    color: var(--text-1);
    font-family: 'Inter', sans-serif;
    font-size: .9rem;
    outline: none;
    transition: all .25s var(--ease);
}
.field-input::placeholder { color: var(--text-3); }
.field-input:hover {
    border-color: rgba(0,0,0,.14);
    background: var(--bg-input-hover);
}
.field-input:focus {
    border-color: var(--border-focus);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px rgba(16,185,129,.1);
}
.field-wrap:focus-within .field-icon { color: var(--accent); }

/* Amount field */
.amount-wrap .field-input { padding-right: 56px; }
.currency-tag {
    position: absolute; right: 12px;
    font-size: .75rem; font-weight: 700;
    color: var(--accent); letter-spacing: .03em;
    pointer-events: none;
}

/* Validation */
.field-error,
.field-validation-error {
    display: block;
    font-size: .75rem;
    color: var(--error);
    margin-top: 4px; padding-left: 2px;
}
.input-validation-error { border-color: var(--error) !important; }

/* ── Payment Method Cards with Radio ── */
.payment-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.pay-option { cursor: pointer; }
.pay-option input[type="radio"] { display: none; }

.pay-card {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 6px;
    padding: 14px 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all .25s var(--ease);
    text-align: center;
    position: relative;
}

/* Radio circle indicator */
.pay-radio {
    width: 18px; height: 18px;
    border-radius: 50%;
    border: 2px solid var(--text-3);
    display: flex; align-items: center; justify-content: center;
    transition: all .25s var(--ease);
    margin-bottom: 2px;
    flex-shrink: 0;
}
.pay-radio::after {
    content: '';
    width: 8px; height: 8px;
    border-radius: 50%;
    background: transparent;
    transition: all .25s var(--ease);
}

.pay-card:hover {
    border-color: rgba(0,0,0,.14);
    background: var(--bg-input-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.pay-option input:checked + .pay-card {
    border-color: var(--accent);
    background: rgba(16,185,129,.06);
    box-shadow: 0 2px 16px var(--accent-glow);
}
.pay-option input:checked + .pay-card .pay-radio {
    border-color: var(--accent);
}
.pay-option input:checked + .pay-card .pay-radio::after {
    background: var(--accent);
}
.pay-option input:checked + .pay-card .pay-icon { color: var(--accent); }
.pay-option input:checked + .pay-card .pay-name { color: var(--text-1); font-weight: 700; }

.pay-icon { color: var(--text-3); transition: color .25s var(--ease); }
.pay-name {
    font-size: .75rem; font-weight: 600;
    color: var(--text-2);
    transition: color .25s var(--ease);
}

/* ── Submit Button ── */
.btn-submit {
    width: 100%;
    display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 15px 24px;
    margin-top: 8px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff; border: none;
    border-radius: var(--radius-xs);
    font-family: 'Inter', sans-serif;
    font-size: .95rem; font-weight: 600;
    cursor: pointer;
    transition: all .3s var(--ease);
    position: relative; overflow: hidden;
}
.btn-submit::before {
    content: '';
    position: absolute; top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.18), transparent);
    transition: left .5s ease;
}
.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(16,185,129,.35);
}
.btn-submit:hover::before { left: 100%; }
.btn-submit:active { transform: translateY(0); }
.btn-arrow {
    display: flex; align-items: center;
    transition: transform .3s var(--ease);
}
.btn-submit:hover .btn-arrow { transform: translateX(4px); }

/* ── Order Summary Card ── */
.order-card {
    background: #fff;
    border: 2px solid rgba(16,185,129,.25);
    border-radius: var(--radius-sm);
    padding: 28px 24px;
    margin-bottom: 24px;
    animation: slideDown .4s var(--ease);
    box-shadow: 0 4px 20px rgba(16,185,129,.08);
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.order-header {
    display: flex; align-items: center; gap: 14px;
    margin-bottom: 16px;
}
.order-check {
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: 50%;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(16,185,129,.25);
}
.order-header-text h3 {
    font-size: 1.1rem; font-weight: 700;
    color: var(--accent-dark);
    margin-bottom: 2px;
}
.order-id {
    font-size: .8rem; color: var(--text-3);
}
.order-id strong { color: var(--text-1); }

.order-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 0 0 16px;
}

.order-section-title {
    font-size: .78rem; font-weight: 700;
    color: var(--accent-dark);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 12px;
    display: flex; align-items: center; gap: 6px;
}
.order-section-title::before {
    content: '';
    width: 3px; height: 14px;
    background: var(--accent);
    border-radius: 2px;
}

.order-details {
    background: var(--bg-input);
    border-radius: var(--radius-xs);
    overflow: hidden;
    margin-bottom: 14px;
}
.order-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
}
.order-row:last-child { border-bottom: none; }
.order-row.highlight {
    background: rgba(16,185,129,.06);
    border-bottom: none;
}

.order-label {
    font-size: .8rem; color: var(--text-3); font-weight: 500;
}
.order-value {
    font-size: .88rem; font-weight: 500; color: var(--text-1);
    text-align: right;
}
.order-amount {
    font-size: 1.05rem; font-weight: 700;
    color: var(--accent-dark);
}

.order-time {
    display: flex; align-items: center; gap: 6px;
    font-size: .75rem; color: var(--text-3);
    margin-bottom: 16px;
}

.btn-new-invoice {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 24px;
    background: var(--accent);
    border: none;
    border-radius: 50px;
    color: #fff;
    font-family: 'Inter', sans-serif;
    font-size: .82rem; font-weight: 600;
    cursor: pointer;
    transition: all .25s var(--ease);
}
.btn-new-invoice:hover {
    background: var(--accent-dark);
    box-shadow: 0 4px 12px rgba(16,185,129,.3);
}

/* ── Validation Styles ── */
.field-validation-error,
.field-error span {
    display: block;
    font-size: .78rem;
    color: var(--error);
    margin-top: 5px;
    padding-left: 2px;
    animation: shakeIn .3s var(--ease);
}
@keyframes shakeIn {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}
.input-validation-error {
    border-color: var(--error) !important;
    box-shadow: 0 0 0 3px rgba(239,68,68,.1) !important;
}
.validation-summary-errors {
    background: rgba(239,68,68,.06);
    border: 1px solid rgba(239,68,68,.2);
    border-radius: var(--radius-xs);
    padding: 12px 16px;
    margin-bottom: 16px;
    font-size: .82rem;
    color: var(--error);
}

/* ── Success Modal Popup ── */
.modal-overlay {
    position: fixed; inset: 0;
    z-index: 1000;
    background: rgba(0,0,0,.45);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    animation: fadeIn .3s ease;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
.modal-overlay.closing {
    opacity: 0;
    transition: opacity .3s ease;
}
.modal-overlay.closing .modal-box {
    transform: scale(.9);
    opacity: 0;
}

.modal-box {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 28px 24px;
    max-width: 480px;
    width: 100%;
    position: relative;
    text-align: center;
    box-shadow: 0 16px 48px rgba(0,0,0,.15), 0 0 0 1px rgba(0,0,0,.05);
    animation: modalIn .35s var(--ease);
    max-height: 90vh;
    overflow-y: auto;
}
@keyframes modalIn {
    from { transform: scale(.85) translateY(20px); opacity: 0; }
    to   { transform: scale(1) translateY(0); opacity: 1; }
}

.modal-close {
    position: absolute; top: 12px; right: 12px;
    background: none; border: none;
    color: var(--text-3);
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    transition: all .2s ease;
    display: flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: var(--bg-input); color: var(--text-1); }

.modal-check {
    width: 64px; height: 64px;
    margin: 0 auto 16px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: 50%;
    color: #fff;
    box-shadow: 0 6px 20px rgba(16,185,129,.3);
}

.modal-title {
    font-size: 1.2rem; font-weight: 700;
    color: var(--text-1);
    margin-bottom: 4px;
}
.modal-subtitle {
    font-size: .82rem;
    color: var(--text-3);
    margin-bottom: 0;
}
.modal-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 16px 0;
}

.modal-details {
    background: var(--bg-input);
    border-radius: var(--radius-xs);
    overflow: hidden;
    text-align: left;
    margin-bottom: 12px;
}
.modal-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 9px 14px;
    border-bottom: 1px solid var(--border);
}
.modal-row:last-child { border-bottom: none; }
.modal-total {
    background: rgba(16,185,129,.06);
}
.modal-label {
    font-size: .78rem; color: var(--text-3); font-weight: 500;
}
.modal-value {
    font-size: .85rem; font-weight: 500; color: var(--text-1);
    text-align: right;
}
.modal-amount {
    font-size: 1rem; font-weight: 700;
    color: var(--accent-dark);
}

.modal-time {
    display: flex; align-items: center; justify-content: center; gap: 5px;
    font-size: .72rem; color: var(--text-3);
    margin-bottom: 16px;
}

.modal-btn {
    width: 100%;
    padding: 13px 24px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff; border: none;
    border-radius: var(--radius-xs);
    font-family: 'Inter', sans-serif;
    font-size: .9rem; font-weight: 600;
    cursor: pointer;
    transition: all .25s var(--ease);
}
.modal-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(16,185,129,.35);
}

/* ── Footer ── */
.site-footer {
    text-align: center;
    padding: 20px 0 12px;
    font-size: .75rem;
    color: var(--text-3);
    display: flex; justify-content: center; align-items: center; gap: 8px;
}
.footer-brand {
    font-weight: 700; color: var(--accent);
}
.footer-sep { opacity: .3; }

/* ================================================
   RESPONSIVE
   ================================================ */

/* Tablet */
@media (max-width: 768px) {
    .page-wrapper { padding: 24px 16px 12px; }
    .card-main { padding: 28px 22px 24px; }
    .payment-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile */
@media (max-width: 520px) {
    .page-wrapper { padding: 16px 12px 8px; }
    .card-main { padding: 24px 16px 20px; border-radius: 12px; }

    .brand-logo { font-size: 1.6rem; }
    .page-title { font-size: 1rem; }

    .form-row { flex-direction: column; gap: 0; }
    .form-col { margin-bottom: 16px; }

    .payment-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .pay-card { padding: 14px 6px; }
    .pay-icon svg { width: 24px; height: 24px; }
    .pay-name { font-size: .7rem; }

    .success-grid { grid-template-columns: 1fr; }

    .lang-btn { padding: 7px 14px; font-size: .78rem; }
}

/* Very small */
@media (max-width: 360px) {
    .card-main { padding: 18px 12px 16px; }
    .field-input { padding: 10px 10px 10px 38px; font-size: .85rem; }
    .btn-submit { padding: 13px 16px; font-size: .88rem; }
}