/* ============================================
   MAHEKK INDUSTRIES - DESIGN SYSTEM
   Color scheme matched to company website
   ============================================ */

:root {
    /* Brand Colors - from company website */
    --brand-green: #1a7a3d;
    --brand-green-dark: #0f5a2b;
    --brand-green-deeper: #0a4520;
    --brand-red: #b22222;
    --brand-red-dark: #8b1a1a;
    --brand-red-light: #d4443c;

    /* Neutrals */
    --white: #ffffff;
    --off-white: #f7f8fa;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Functional */
    --error-bg: #fef2f2;
    --error-color: #dc2626;
    --error-border: #fca5a5;
    --success-color: #16a34a;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--off-white);
    color: var(--gray-700);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================
   TOP CONTACT BAR
   ============================================ */
.top-bar {
    background-color: var(--brand-red);
    color: var(--white);
    font-size: 0.8rem;
    letter-spacing: 0.03em;
    font-weight: 500;
}

.top-bar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.top-bar-item:hover {
    opacity: 0.85;
}

.top-bar-item svg {
    flex-shrink: 0;
}

/* ============================================
   MAIN HEADER / NAV
   ============================================ */
.main-header {
    background-color: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow var(--transition-base);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 3px solid var(--brand-red);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    transition: transform var(--transition-base);
}

.logo-icon:hover {
    transform: scale(1.05);
}

.logo-icon span {
    font-weight: 900;
    font-size: 1.4rem;
    color: var(--brand-green);
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--gray-900);
    letter-spacing: 0.05em;
    line-height: 1.1;
}

.logo-text p {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 500;
    font-style: italic;
}

.main-nav {
    display: flex;
    gap: 0.25rem;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--brand-green);
    transition: width var(--transition-base);
    border-radius: 1px;
}

.nav-link:hover {
    color: var(--brand-green);
    background-color: rgba(26, 122, 61, 0.06);
}

.nav-link:hover::after {
    width: 60%;
}

.nav-link.active {
    color: var(--brand-red);
}

.nav-link.active::after {
    width: 60%;
    background: var(--brand-red);
}

/* ============================================
   HERO BANNER
   ============================================ */
.hero-banner {
    position: relative;
    background: linear-gradient(135deg, var(--brand-green-deeper) 0%, var(--brand-green-dark) 40%, var(--brand-green) 100%);
    padding: 4rem 1.5rem;
    text-align: center;
    overflow: hidden;
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(178, 34, 34, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.08;
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 20px, rgba(255,255,255,0.3) 20px, rgba(255,255,255,0.3) 21px),
        repeating-linear-gradient(90deg, transparent, transparent 20px, rgba(255,255,255,0.3) 20px, rgba(255,255,255,0.3) 21px);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 0.6s ease-out;
}

.hero-tag {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(4px);
    color: rgba(255,255,255,0.9);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    padding: 0.35rem 1rem;
    border-radius: 50px;
    margin-bottom: 1rem;
    border: 1px solid rgba(255,255,255,0.2);
}

.hero-title {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 0.75rem;
    letter-spacing: 0.02em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.hero-subtitle {
    color: rgba(255,255,255,0.65);
    font-size: clamp(0.85rem, 2vw, 1rem);
    font-weight: 400;
    letter-spacing: 0.02em;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    padding: 2.5rem 0 3rem 0;
}

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    font-weight: 800;
    color: var(--gray-800);
}

.text-green {
    color: var(--brand-green);
}

.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-green), var(--brand-red));
    margin: 0.75rem auto 0;
    border-radius: 2px;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: var(--white);
    border-radius: 14px;
    padding: 2.25rem;
    margin-bottom: 1.75rem;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.card:hover {
    box-shadow: 0 12px 28px rgba(26,122,61,0.1), 0 4px 10px rgba(0,0,0,0.06);
    transform: translateY(-5px);
    border-color: rgba(26,122,61,0.2);
}

.card-header-strip {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brand-green), var(--brand-green-dark));
    border-radius: 12px 12px 0 0;
}

.card-header-strip--red {
    background: linear-gradient(90deg, var(--brand-red), var(--brand-red-dark));
}

.card-title-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--gray-100);
}

.card-title-row svg {
    color: var(--brand-green);
    flex-shrink: 0;
}

.card-title-row h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
    border: none;
    padding: 0;
}

/* ============================================
   FILE UPLOAD
   ============================================ */
.file-upload-wrapper {
    border: 2px dashed var(--brand-green);
    border-radius: 12px;
    padding: 3rem 1rem;
    text-align: center;
    cursor: pointer;
    position: relative;
    transition: all var(--transition-base);
    background: linear-gradient(135deg, rgba(26,122,61,0.03), rgba(26,122,61,0.06));
    margin-bottom: 1.75rem;
}

.file-upload-wrapper:hover {
    background: linear-gradient(135deg, rgba(26,122,61,0.06), rgba(26,122,61,0.1));
    border-color: var(--brand-green-dark);
    transform: scale(1.005);
}

.file-upload-wrapper input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.upload-icon {
    color: var(--brand-green);
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
    animation: pulseIcon 2s infinite;
}

@keyframes pulseIcon {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.file-upload-wrapper p {
    font-weight: 600;
    color: var(--brand-green-dark);
    font-size: 0.95rem;
}

.file-upload-wrapper .small-text {
    font-size: 0.8rem;
    color: var(--gray-400);
    margin-top: 0.4rem;
    font-weight: 400;
}

#imagePreview {
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
    margin: 1rem auto 0;
    box-shadow: var(--shadow-md);
    display: block;
    position: relative;
    z-index: 3;
    border: 2px solid var(--gray-200);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.form-group label svg {
    color: var(--brand-green);
    flex-shrink: 0;
}

.form-group select, .form-group input {
    padding: 0.7rem 0.85rem;
    border: 1.5px solid var(--gray-300);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.925rem;
    background-color: var(--white);
    color: var(--gray-700);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-group select:focus, .form-group input:focus {
    outline: none;
    border-color: var(--brand-green);
    box-shadow: 0 0 0 3px rgba(26, 122, 61, 0.12);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn-primary, .btn-secondary {
    width: 100%;
    padding: 0.9rem 1.5rem;
    min-height: 48px;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    letter-spacing: 0.02em;
    -webkit-tap-highlight-color: transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand-green), var(--brand-green-dark));
    color: var(--white);
    box-shadow: 0 4px 14px rgba(26, 122, 61, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--brand-green-dark), var(--brand-green-deeper));
    box-shadow: 0 6px 20px rgba(26, 122, 61, 0.45);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 2px 8px rgba(26, 122, 61, 0.3);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--brand-green-dark);
    border: 2px solid var(--brand-green);
    margin-top: 0.75rem;
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: rgba(26, 122, 61, 0.06);
    border-color: var(--brand-green-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

/* ============================================
   LOADING SPINNER
   ============================================ */
.loading-container {
    text-align: center;
    padding: 2.5rem 0;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--brand-green);
    border-right-color: var(--brand-red);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem auto;
}

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

.loading-container p {
    color: var(--brand-green-dark);
    font-weight: 600;
    font-size: 1rem;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   UTILITIES
   ============================================ */
.hidden {
    display: none !important;
}

.error-message {
    background-color: var(--error-bg);
    color: var(--error-color);
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-top: 1rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid var(--error-border);
    animation: shakeIn 0.4s ease-out;
}

@keyframes shakeIn {
    0% { transform: translateX(-8px); }
    25% { transform: translateX(6px); }
    50% { transform: translateX(-4px); }
    75% { transform: translateX(2px); }
    100% { transform: translateX(0); }
}

/* ============================================
   DATA TABLES
   ============================================ */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--gray-100);
    text-align: left;
    font-size: 0.9rem;
}

.data-table th {
    font-weight: 600;
    color: var(--gray-500);
    width: 45%;
    font-size: 0.85rem;
}

.data-table td {
    font-weight: 600;
    color: var(--gray-800);
}

.data-table tbody tr {
    transition: background-color var(--transition-fast);
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--gray-50);
}

.data-table tbody tr:hover {
    background-color: rgba(26, 122, 61, 0.04);
}

.final-amount-row {
    background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark)) !important;
    color: var(--white) !important;
}

.final-amount-row th, .final-amount-row td {
    color: var(--white) !important;
    font-size: 1.15rem;
    font-weight: 800;
    border: none;
    padding: 1rem;
}

.final-amount-row:hover {
    background: linear-gradient(135deg, var(--brand-red-dark), var(--brand-red)) !important;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: linear-gradient(135deg, #8b1a1a, #a52222, #8b1a1a);
    color: #fff;
    padding: 1.2rem 1.5rem;
    margin-top: 1rem;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #8b1a1a;
}

.footer-logo-icon span {
    font-weight: 900;
    color: #fff;
    font-size: 1rem;
}

.footer-brand strong {
    color: #fff;
    font-size: 0.95rem;
}

.footer-brand p {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.75);
}

.footer-credit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.85);
}

.lexicon-logo {
    height: 50px;
    object-fit: contain;
    background: #fff;
    border-radius: 4px;
    padding: 3px 8px;
}

/* ============================================
   RESPONSIVE — TABLET
   ============================================ */
@media (max-width: 768px) {
    .header-inner {
        padding: 0.6rem 1rem;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
    }

    .logo-icon span {
        font-size: 1.1rem;
    }

    .logo-text h1 {
        font-size: 1.3rem;
    }

    .hero-banner {
        padding: 2.5rem 1rem;
        min-height: 160px;
    }

    .container {
        padding: 0 1rem;
    }

    .card {
        padding: 1.75rem 1.25rem;
    }

    .form-group select, .form-group input {
        padding: 0.8rem;
        font-size: 1rem;
        min-height: 48px;
    }

    .btn-primary, .btn-secondary {
        min-height: 50px;
        font-size: 1rem;
    }

    .data-table th, .data-table td {
        padding: 0.65rem 0.75rem;
        font-size: 0.85rem;
    }
}

/* ============================================
   RESPONSIVE — MOBILE
   ============================================ */
@media (max-width: 600px) {
    .form-row {
        flex-direction: column;
        gap: 0.75rem;
    }

    .card {
        padding: 1.5rem 1rem;
        border-radius: 10px;
        margin-bottom: 1.25rem;
    }

    .card:hover {
        transform: none;
    }

    .footer-inner {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }

    .footer-brand {
        flex-direction: column;
    }

    .footer-credit {
        font-size: 0.75rem;
    }

    .hero-tag {
        font-size: 0.65rem;
        padding: 0.3rem 0.75rem;
    }

    .hero-banner {
        padding: 2rem 1rem;
        min-height: 140px;
    }

    .file-upload-wrapper {
        padding: 2rem 0.75rem;
    }

    .section-header {
        margin-bottom: 1.25rem;
    }

    .main-content {
        padding: 1.5rem 0 2rem 0;
    }

    .btn-download {
        width: 100%;
        justify-content: center;
        padding: 0.9rem 1.5rem;
        min-height: 50px;
    }

    .form-group label {
        font-size: 0.8rem;
    }
}

/* ============================================
   RESPONSIVE — SMALL MOBILE
   ============================================ */
@media (max-width: 400px) {
    .logo-text h1 {
        font-size: 1.1rem;
    }

    .logo-text p {
        font-size: 0.7rem;
    }

    .logo-icon {
        width: 36px;
        height: 36px;
    }

    .logo-icon span {
        font-size: 1rem;
    }

    .card {
        padding: 1.25rem 0.85rem;
    }

    .card-title-row h2 {
        font-size: 1.1rem;
    }
}

/* ============================================
   DOWNLOAD EXCEL BUTTON
   ============================================ */
.download-actions {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.9rem 2rem;
    background: linear-gradient(135deg, #1a7a3d 0%, #28a745 50%, #1a7a3d 100%);
    background-size: 200% 200%;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 15px rgba(26, 122, 61, 0.35);
    transition: all 0.3s ease;
}

.btn-download:hover {
    background-position: 100% 0;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 122, 61, 0.5);
}

.btn-download:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(26, 122, 61, 0.3);
}

.btn-download svg {
    flex-shrink: 0;
}