/* ============================================
   FONT DECLARATIONS
   ============================================ */
@font-face {
    font-family: "Li Ador";
    src: url("li-ador.woff2") format("woff2");
    font-weight: 100 900;
    font-style: normal;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

* {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
}

:root {
    /* Color Palette */
    --color-white: #ffffff;
    --color-black: #111827;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    --color-slate-500: #64748b;
    
    /* Brand Colors */
    --color-primary: #a855f7;
    --color-primary-dark: #9333ea;
    --color-secondary: #ec4899;
    --color-secondary-dark: #db2777;
    
    /* Status Colors */
    --color-success: #059669;
    --color-success-light: #10b981;
    --color-success-bg: #d1fae5;
    --color-danger: #dc2626;
    --color-danger-dark: #991b1b;
    --color-danger-bg: #fee2e2;
    --color-danger-border: #fecaca;
    --color-warning-bg: #fff7ed;
    --color-warning-border: #fed7aa;
    --color-info: #0284c7;
    --color-info-bg: #e0f2fe;
    --color-info-light: #dbeafe;
    --color-info-border: #bfdbfe;
    
    /* Action Colors */
    --color-blue: #0066ff;
    --color-blue-hover: #0099ff;
    --color-blue-dark: #2563eb;
    --color-whatsapp: #1da851;
    --color-whatsapp-hover: #25d366;
    --color-teal: #0d9488;
    --color-teal-light: #14b8a6;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
    --spacing-4xl: 60px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    
    /* Typography */
    --font-primary: 'Bornomala', serif;
    --font-secondary: "Li Ador", sans-serif;
    --line-height-base: 1.6;
    --line-height-relaxed: 1.8;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* Layout */
    --max-width-content: 980px;
    --max-width-wide: 1280px;
}

body {
    font-family: var(--font-primary);
    font-weight: 400;
    background: var(--color-gray-50);
    color: var(--color-gray-900);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: var(--line-height-base);
}

/* ============================================
   HEADER STYLES
   ============================================ */
.site-header {
    font-family: var(--font-secondary);
    background: var(--color-white);
    border-bottom: 2px solid var(--color-gray-200);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 30px;
}

.header-divider {
    width: 2px;
    height: 50%;
    background: var(--color-gray-500);
}

.header-logo p {
    font-size: 20px;
    color: var(--color-gray-500);
    font-weight: 300;
    margin-left: -5px;
}

.logo-img {
    height: 30px;
    width: auto;
    object-fit: contain;
    pointer-events: none;
}

.header-buttons {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

/* ============================================
   BUTTON STYLES
   ============================================ */
.btn {
    font-family: var(--font-secondary);
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) 14px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-website {
    background: var(--color-blue);
    color: var(--color-white);
    box-shadow: 0 1px 2px rgba(14, 165, 233, 0.2);
}

.btn-website:hover {
    background: var(--color-blue-hover);
    box-shadow: 0 4px 6px rgba(14, 165, 233, 0.3);
}

.btn-whatsapp {
    background: var(--color-whatsapp);
    color: var(--color-white);
    box-shadow: 0 1px 2px rgba(37, 211, 102, 0.2);
}

.btn-whatsapp:hover {
    background: var(--color-whatsapp-hover);
    box-shadow: 0 4px 6px rgba(37, 211, 102, 0.3);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    box-shadow: 0 2px 4px rgba(168, 85, 247, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);
    box-shadow: 0 4px 8px rgba(168, 85, 247, 0.4);
}

/* ============================================
   LAYOUT & CONTAINERS
   ============================================ */
.main-content {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

.container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   CARD STYLES
   ============================================ */
.card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.card-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    color: var(--color-white);
    font-weight: 600;
}

.card-header h2,
.card-header h3 {
    font-family: var(--font-secondary);
    font-size: 24px;
    font-weight: 400;
    margin: 0;
}

.card-header-purple {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.card-header-blue {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-blue-hover) 100%);
}

.card-header-green {
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-light) 100%);
}

.card-header-teal {
    background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-teal-light) 100%);
}

/* ============================================
   FORM STYLES
   ============================================ */
.form-description {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
    line-height: var(--line-height-base);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
}

.invoice-input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.input-prefix,
.input-separator {
    font-weight: 600;
    color: var(--color-black);
    font-size: 18px;
}

.form-input,
.form-select {
    font-family: var(--font-secondary);
    font-weight: 400;
    padding: 10px 14px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 15px;
    background: var(--color-white);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

.input-number {
    width: 140px;
}

.form-select {
    cursor: pointer;
}

.form-actions {
    margin-top: var(--spacing-lg);
}

/* ============================================
   TABLE STYLES
   ============================================ */
.info-table {
    width: 100%;
    border-collapse: collapse;
}

.info-table tbody tr {
    border-bottom: 1px solid var(--color-gray-200);
    transition: background-color var(--transition-fast);
}

.info-table tbody tr:last-child {
    border-bottom: none;
}

.info-table td {
    padding: 10px 14px;
    font-size: 20px;
}

.invoice-number,
.company-name,
.txn-id {
    font-family: var(--font-secondary);
}

.label-cell {
    font-weight: 600;
    color: var(--color-gray-900);
    background-color: var(--color-gray-50);
    width: 35%;
}

.amount-bold {
    font-weight: 600;
}

.amount-paid {
    font-weight: 700;
    color: var(--color-success);
    font-size: 24px !important;
}

.amount-due {
    font-weight: 700;
    color: var(--color-danger);
    font-size: 24px !important;
}

.amount-due-text {
    color: var(--color-danger);
}

.amount-paid-text {
    color: var(--color-success);
}

.amount-due-blue {
    font-weight: 700;
    color: var(--color-blue-dark);
    font-size: 18px;
}

.highlight-row.highlight-blue {
    background-color: var(--color-info-light);
}

.highlight-row.highlight-red {
    background-color: var(--color-danger-border);
}

.highlight-row.highlight-blue .label-cell {
    background-color: var(--color-info-border);
}

/* ============================================
   BADGE STYLES
   ============================================ */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 16px;
    font-weight: 600;
}

.status-unpaid {
    background-color: var(--color-danger-bg);
    color: #ef4444;
}

.status-paid {
    background-color: var(--color-success-bg);
    color: #065f46;
}

.status-partial {
    background-color: var(--color-info-bg);
    color: var(--color-info);
}

.status-overdue {
    background-color: var(--color-danger-bg);
    color: var(--color-danger-dark);
}

.status-unknown {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
}

/* ============================================
   ALERT STYLES
   ============================================ */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-sm);
    line-height: var(--line-height-base);
}

.alert-info {
    background: var(--color-warning-bg);
    border: 2px dashed var(--color-warning-border);
    color: var(--color-gray-700);
}

.alert-error {
    background-color: #fef2f2;
    border: 2px dashed var(--color-danger-border);
    color: var(--color-danger-dark);
    margin-bottom: var(--spacing-xl);
}

.alert-notification {
    padding: 10px 14px;
}

.alert-notification .alert-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-notification .alert-icon-wrapper {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ef4444;
    border-radius: 50%;
}

.alert-notification .alert-icon {
    width: 18px;
    height: 18px;
    fill: var(--color-white);
}

.alert-notification .alert-text {
    flex: 1;
}

.alert-notification .alert-text p {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-danger-dark);
}

.alert-due {
    padding: 10px 14px;
}

.alert-content {
    display: flex;
    gap: var(--spacing-md);
}

.alert-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.alert-text h3 {
    font-family: var(--font-secondary);
    margin-bottom: 5px;
}

.alert-text p {
    margin: 0;
    font-size: 18px;
    color: var(--color-gray-700);
}

.alert-text strong {
    font-weight: 600;
}

.alert-due p {
    color: var(--color-danger);
    font-weight: 600;
}

/* ============================================
   PAYMENT GRID
   ============================================ */
.payment-grid {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.payment-iframe-col {
    display: flex;
    flex-direction: column;
}

.iframe-wrapper {
    background: linear-gradient(135deg, #eff6ff 0%, var(--color-info-light) 100%);
    border: 2px dashed var(--color-info-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.payment-iframe {
    width: 100%;
    flex: 1;
    min-height: 265px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    box-shadow: var(--shadow-inset);
}

.payment-help-col {
    height: 100%;
}

.payment-help-col .alert {
    height: 100%;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.invoice-result {
    animation: fadeIn var(--transition-slow) ease-in;
}

/* ============================================
   LOADING SPINNER
   ============================================ */
.loading-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) 0;
    gap: var(--spacing-md);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-text {
    color: var(--color-gray-500);
    font-size: 15px;
}

/* ============================================
   FOOTER STYLES
   ============================================ */
.site-footer {
    background: var(--color-white);
    padding: 5px 0;
    margin-top: auto;
}

.footer-container {
    max-width: var(--max-width-content);
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    text-align: center;
}

.footer-text {
    font-family: var(--font-secondary);
    color: var(--color-gray-500);
    font-size: 14px;
    font-weight: 300;
    line-height: var(--line-height-base);
}

/* ============================================
   LANDING PAGE STYLES
   ============================================ */
.landing-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.landing-main {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.landing-container {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-4xl) 40px;
    margin-bottom: 0 !important;
    max-width: 900px;
    width: 100%;
    text-align: center;
    animation: fadeInScale 0.5s ease-out;
}

.landing-logo {
    font-family: var(--font-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.landing-logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    pointer-events: none;
}

.landing-divider {
    width: 2px;
    height: 30px;
    background: var(--color-slate-500);
    border-radius: 2px;
}

.landing-title {
    font-size: 32px;
    font-weight: 300;
    color: var(--color-slate-500);
    margin-left: -10px;
}

.landing-text {
    font-size: 25px;
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-700);
    margin-bottom: 40px;
    padding: 0 20px;
    font-weight: 300;
}

.landing-buttons {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    align-items: center;
    justify-content: center;
}

.landing-buttons .btn {
    width: 100%;
    max-width: 310px;
    padding: 14px var(--spacing-xl);
    gap: var(--spacing-sm);
    font-size: 24px;
    justify-content: center;
}

.landing-buttons .btn-icon {
    width: 22px;
    height: 22px;
}

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

/* Large Screens (1440px and below) */
@media (max-width: 1440px) {
    .logo-img {
        height: 25px;
    }

    .header-logo p {
        font-size: 16px;
        margin-left: -5px;
    }

    .btn {
        padding: 6px var(--spacing-md);
        font-size: 15px;
    }

    .card-header {
        padding: 10px 18px;
    }

    .card-header h2,
    .card-header h3 {
        font-size: 22px;
    }

    .info-table td {
        padding: 6px 10px;
        font-size: 17px;
    }

    .badge {
        font-size: 14px;
    }

    .amount-paid,
    .amount-due {
        font-size: 20px !important;
    }
}

/* Tablets (768px and below) */
@media (max-width: 768px) {
    body {
        min-height: 92vh;
    }

    .badge {
        padding: var(--spacing-xs) 10px;
        font-size: 15px;
    }

    .header-container {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .header-logo {
        gap: 5px;
        height: 25px;
    }

    .logo-img {
        height: 20px;
    }

    .header-logo p {
        font-size: 16px;
    }

    .header-buttons {
        width: auto;
        justify-content: center;
    }

    .btn {
        font-size: 18px;
        padding: 6px 10px;
    }

    .main-content {
        padding: 20px 0;
    }

    .invoice-input-group {
        flex-direction: column;
        align-items: stretch;
    }

    .input-number,
    .form-select {
        width: 100%;
    }

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

    .payment-iframe {
        min-height: 260px;
    }

    .alert-notification .alert-text p {
        font-size: 16px;
    }

    .btn-website {
        display: none;
    }

    .btn-whatsapp span {
        display: inline;
    }

    .label-cell {
        width: 50%;
    }

    .info-table td {
        padding: 10px var(--spacing-md);
        font-size: 18px;
    }

    .amount-paid,
    .amount-due {
        font-size: 20px !important;
    }

    /* Landing Page Responsive */
    .landing-container {
        padding: 26px 14px;
        border-radius: var(--spacing-lg);
    }

    .landing-logo-img {
        height: 45px;
    }

    .landing-divider {
        height: 45px;
        width: 2px;
    }

    .landing-title {
        font-size: 24px;
    }

    .landing-text {
        font-size: 20px;
        font-weight: 400;
        padding: 0 10px;
        margin-bottom: var(--spacing-2xl);
    }

    .landing-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .landing-buttons .btn {
        display: flex !important;
        font-size: 20px !important;
        padding: var(--spacing-md) 20px;
    }

    .landing-buttons .btn-whatsapp span {
        font-size: 20px !important;
    }

    .landing-buttons .btn-icon {
        width: 20px;
        height: 20px;
    }
}

/* Mobile (560px and below) */
@media (max-width: 560px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .logo-img {
        height: 17px;
    }

    .header-logo p {
        font-size: 14px;
        margin-left: 0;
    }

    .btn {
        gap: var(--spacing-xs);
    }

    .card {
        border-radius: var(--radius-sm);
    }

    .card-header {
        padding: var(--spacing-sm) 14px;
    }

    .card-header h2,
    .card-header h3 {
        font-size: 20px;
    }

    .btn-icon {
        width: 16px;
        height: 16px;
    }

    .btn-whatsapp span {
        font-size: 14px;
    }

    .info-table td {
        padding: var(--spacing-sm) 10px;
        font-size: 16px;
    }

    .badge {
        font-size: 12px;
    }

    .amount-paid,
    .amount-due {
        font-size: 18px !important;
    }

    .footer-text {
        font-size: 13px;
    }

    .alert-notification .alert-icon-wrapper {
        width: 28px;
        height: 28px;
    }

    .alert-notification .alert-icon {
        width: 16px;
        height: 16px;
    }

    .alert-text p {
        font-size: 16px;
    }

    .alert-notification .alert-text p {
        font-size: 14px;
    }

    /* Landing Page Mobile */
    .landing-container {
        padding: 26px 14px;
    }

    .landing-logo {
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-xl);
    }

    .landing-logo-img {
        height: 30px;
    }

    .landing-divider {
        height: 20px;
    }

    .landing-title {
        font-size: 18px;
        margin-left: 0;
    }

    .landing-text {
        font-size: 16px;
        margin-bottom: var(--spacing-xl);
    }

    .landing-buttons .btn {
        font-size: 18px !important;
        padding: 10px 18px;
        gap:4px;
    }

    .landing-buttons .btn-whatsapp span {
        font-size: 18px !important;
    }
}