/**
 * ENR LUX Energy Calculator Styles - Version 5
 * Brand Colors: Green theme from ENR LUX
 * Clean, professional, mobile-first design
 */

/* ============================================================================
   CSS VARIABLES - ENR LUX BRAND COLORS
   ============================================================================ */

:root {
    /* ENR LUX Brand Colors (extracted from logos) */
    --enr-bright-green: #7CB342;      /* Bright lime green (main text fill) */
    --enr-medium-green: #8BC34A;      /* Medium green variant */
    --enr-dark-green: #2E7D32;        /* Dark green (text outline) */
    --enr-forest-green: #1B5E20;      /* Forest green (NRLUX logo) */
    --enr-light-green: #AED581;       /* Light accent green */

    /* UI Colors */
    --bg-white: #FFFFFF;
    --bg-light: #F5F9F7;              /* Subtle green-tinted white */
    --bg-off-white: #FAFAFA;
    --text-dark: #1B5E20;             /* Use forest green for text */
    --text-gray: #546E7A;
    --border-light: #E0E0E0;

    /* Gradients */
    --gradient-green: linear-gradient(135deg, var(--enr-bright-green) 0%, var(--enr-dark-green) 100%);
    --gradient-green-reverse: linear-gradient(135deg, var(--enr-dark-green) 0%, var(--enr-forest-green) 100%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.08);
    --shadow-md: 0 4px 16px rgba(27, 94, 32, 0.12);
    --shadow-lg: 0 8px 32px rgba(27, 94, 32, 0.15);

    /* Status Colors */
    --success: #4CAF50;
    --warning: #FF9800;
    --error: #F44336;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    background: var(--bg-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    padding-top: 90px; /* Space for fixed navbar */
}

/* ============================================================================
   NAVIGATION / HEADER
   ============================================================================ */

.navbar, .nav {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    border-bottom: 3px solid var(--enr-bright-green);
    transition: transform var(--transition-base);
}

.navbar.nav-hidden {
    transform: translateY(-100%);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.navbar-left {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-logo {
    display: flex;
    align-items: center;
}

.logo-main, .logo {
    height: 60px;
    width: auto;
    transition: transform var(--transition-fast);
}

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

/* For calculator page navbar */
.navbar-logo .logo {
    height: 70px;
}

.navbar-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-dropdown-button {
    padding: 0.5rem 1rem;
    border: 2px solid var(--enr-bright-green);
    background: var(--bg-white);
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    font-weight: 600;
}

.lang-dropdown-button:hover {
    background: var(--enr-bright-green);
    color: white;
    box-shadow: var(--shadow-sm);
}

.lang-dropdown-button .arrow {
    font-size: 0.7rem;
    transition: transform var(--transition-base);
}

.lang-dropdown-button.open .arrow {
    transform: rotate(180deg);
}

.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--bg-white);
    border: 2px solid var(--enr-bright-green);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    display: none;
    flex-direction: column;
    min-width: 160px;
    z-index: 1001;
    overflow: hidden;
}

.lang-dropdown-menu.open {
    display: flex;
}

.lang-btn {
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all var(--transition-fast);
    color: var(--text-dark);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-light);
}

.lang-btn:last-child {
    border-bottom: none;
}

.lang-btn.active {
    background: var(--enr-bright-green);
    color: white;
}

.lang-btn:hover:not(.active) {
    background: var(--bg-light);
}

.lang-btn-text {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ============================================================================
   LANGUAGE SELECTION MODAL (First Visit)
   ============================================================================ */

.lang-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(27, 94, 32, 0.85);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    animation: fadeIn 0.3s ease-in-out;
}

.lang-modal-overlay.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

.lang-modal {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 3rem 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.4s ease-out;
    text-align: center;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.lang-modal h2 {
    color: var(--text-dark);
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.lang-modal p {
    color: var(--text-gray);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.lang-modal-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.lang-modal-option {
    background: var(--bg-light);
    border: 2px solid var(--bg-light);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.lang-modal-option:hover {
    border-color: var(--enr-bright-green);
    background: var(--bg-white);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.lang-modal-option .flag {
    font-size: 3rem;
    line-height: 1;
}

.lang-modal-option .lang-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1.1rem;
}

/* ============================================================================
   HERO / INTRO SECTION
   ============================================================================ */

.hero {
    background: var(--gradient-green);
    color: white;
    padding: 8rem 1.5rem 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: 90px; /* Account for fixed navbar */
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.hero .subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: 0;
    opacity: 0.95;
    font-weight: 400;
}

.powered-by {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    opacity: 0.9;
}

.powered-by-logo {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
}

/* Wave Separator */
.wave-separator {
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.wave-separator svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 60px;
}

.wave-separator .shape-fill {
    fill: var(--bg-light);
}

/* ============================================================================
   LAYOUT (for calculator.html)
   ============================================================================ */

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 100vh;
}

#calculatorForm {
    position: relative;
    min-height: 600px;
}

/* ============================================================================
   HEADER (for calculator.html)
   ============================================================================ */

.header {
    text-align: center;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md);
    background: var(--gradient-green);
    color: white;
    border-radius: 16px;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 10px 40px var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}

.header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.95;
    font-weight: 400;
}

/* ============================================================================
   CALCULATOR SECTION
   ============================================================================ */

.calculator-section {
    padding: var(--spacing-xl) var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.calculator-container {
    background: var(--bg-white);
    border-radius: 16px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border-left: 6px solid var(--enr-bright-green);
}

/* Progress Bar */
.progress-container {
    margin-bottom: var(--spacing-lg);
}

.progress-bar-wrapper {
    background: var(--bg-light);
    border-radius: 50px;
    height: 12px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.progress-bar {
    height: 100%;
    background: var(--gradient-green);
    border-radius: 50px;
    transition: width var(--transition-base);
    box-shadow: 0 2px 8px rgba(124, 179, 66, 0.4);
}

.progress-text {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-gray);
    font-weight: 600;
}

/* Question Cards */
.question-section {
    display: none;
    background: var(--bg-white);
    border-radius: 20px;
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 8px 32px var(--shadow);
    animation: fadeInSlide 0.4s ease-out;
}

.question-section.active {
    display: block;
}

.question-section.conditional {
    /* Conditional questions hidden by default */
}

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

.question-section h2 {
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.question-hint {
    color: var(--text-gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

/* Option Cards */
.options {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.option-card {
    position: relative;
    display: block;
    padding: var(--spacing-md);
    background: var(--bg-light);
    border: 2px solid var(--border-light);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.option-card input:checked {
    /* Make parent card green when checked */
}

.option-card:has(input:checked) {
    background: rgba(124, 179, 66, 0.08);
    border-color: var(--enr-bright-green);
}

.option-card:hover {
    border-color: var(--enr-bright-green);
    background: var(--bg-white);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.option-card.recommended {
    border-color: var(--enr-bright-green);
    background: rgba(124, 179, 66, 0.05);
}

.option-card.checkbox {
    /* Checkbox-specific styling if needed */
}

.option-card input[type="radio"],
.option-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.option-card input:checked ~ .option-label {
    color: var(--enr-dark-green);
    font-weight: 600;
}

.option-card input:checked ~ .option-label::before {
    content: '✓ ';
    font-weight: 700;
    color: var(--enr-bright-green);
    margin-right: 0.5rem;
}

.option-card input:checked ~ .checkmark {
    background: var(--enr-bright-green);
    border-color: var(--enr-bright-green);
}

.option-card input:checked ~ .checkmark::after {
    display: block;
}

.option-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    transition: all var(--transition-fast);
}

.option-desc, .description {
    font-size: var(--font-size-sm);
    color: var(--text-gray);
    margin-top: 0.25rem;
    margin-left: 3rem;
    display: block;
}

/* Custom Checkmark */
.checkmark {
    position: absolute;
    top: 50%;
    left: var(--spacing-md);
    transform: translateY(-50%);
    height: 24px;
    width: 24px;
    background: var(--bg-white);
    border: 2px solid var(--border-light);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.checkmark::after {
    content: '';
    position: absolute;
    display: none;
    left: 7px;
    top: 3px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--enr-bright-green);
    color: white;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

/* Navigation Buttons */
.btn-group {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.btn-prev,
.btn-next,
.btn-calculate {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: 8px;
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.btn-prev {
    background: var(--bg-light);
    color: var(--text-dark);
    border: 2px solid var(--border-light);
}

.btn-prev:hover {
    background: var(--bg-white);
    border-color: var(--enr-bright-green);
}

.btn-next,
.btn-calculate {
    background: var(--gradient-green);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-next:hover,
.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-next:active,
.btn-prev:active {
    transform: translateY(0);
}

/* ============================================================================
   CUSTOM INPUT & FORM ELEMENTS
   ============================================================================ */

.custom-input {
    margin-top: var(--spacing-md);
}

.custom-input label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

.custom-input input,
.custom-input select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-light);
    border-radius: 8px;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    font-family: var(--font-primary);
}

.custom-input input {
    background: var(--bg-white);
}

.custom-input select {
    background-color: var(--bg-white);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237CB342' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    padding-right: 40px;
}

.custom-input input:focus,
.custom-input select:focus {
    outline: none;
    border-color: var(--enr-bright-green);
    box-shadow: 0 0 0 3px rgba(124, 179, 66, 0.1);
}

.custom-input select optgroup {
    font-weight: 600;
    color: var(--text-dark);
    font-style: normal;
}

.custom-input select option {
    padding: var(--spacing-xs);
}

.commune-info {
    padding: var(--spacing-sm);
    background: rgba(124, 179, 66, 0.1);
    border-radius: 12px;
    font-size: var(--font-size-sm);
    color: var(--enr-dark-green);
    margin-top: var(--spacing-sm);
    border: 1px solid rgba(124, 179, 66, 0.3);
    display: none;
}

.hint {
    color: var(--text-gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

/* ============================================================================
   RESULTS SECTION
   ============================================================================ */

.results-section {
    background: var(--bg-white);
    border-radius: 20px;
    padding: var(--spacing-xl);
    box-shadow: 0 8px 32px var(--shadow);
    margin-top: var(--spacing-xl);
}

.results-section h2 {
    text-align: center;
    font-size: var(--font-size-2xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
}

.result-card {
    background: var(--bg-white);
    border: 2px solid var(--enr-bright-green);
    border-left: 4px solid var(--enr-bright-green);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.result-card h3 {
    font-size: var(--font-size-xl);
    color: var(--enr-dark-green);
    margin-bottom: var(--spacing-md);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.result-label {
    color: var(--enr-dark-green);
    font-size: var(--font-size-base);
}

.result-value {
    color: var(--enr-dark-green);
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.result-highlight {
    background: var(--bg-white);
    color: var(--enr-dark-green);
    padding: var(--spacing-xl);
    border-radius: 16px;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    border: 3px solid var(--enr-bright-green);
    box-shadow: var(--shadow-md);
}

.result-highlight h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    color: var(--enr-dark-green);
}

.result-highlight p {
    font-size: var(--font-size-lg);
    color: var(--enr-dark-green);
}

.results-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid var(--border-light);
    border-radius: 8px;
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-block;
    font-family: var(--font-primary);
}

.btn-secondary:hover {
    background: var(--bg-white);
    border-color: var(--enr-bright-green);
}

/* Ineligible Message */
.ineligible-message {
    background: var(--bg-white);
    border-radius: 20px;
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: 0 8px 32px var(--shadow);
}

.ineligible-message h2 {
    font-size: var(--font-size-2xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.ineligible-message p {
    color: var(--text-gray);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

/* ============================================================================
   ORIGINAL RESULTS SECTION (kept for compatibility)
   ============================================================================ */

.results-container {
    background: var(--bg-white);
    color: var(--enr-dark-green);
    padding: var(--spacing-xl);
    border-radius: 16px;
    margin-top: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--enr-bright-green);
}

.results-container h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--enr-dark-green);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.results-grid .result-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--enr-bright-green);
    box-shadow: var(--shadow-sm);
}

.result-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--enr-dark-green);
}

.results-grid .result-label {
    font-size: var(--font-size-sm);
    color: var(--enr-dark-green);
}

.results-cta {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.btn-book-audit {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: white;
    color: var(--enr-dark-green);
    border-radius: 8px;
    font-size: var(--font-size-lg);
    font-weight: 700;
    text-decoration: none;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.btn-book-audit:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ============================================================================
   AUDIT FORM SECTION
   ============================================================================ */

.audit-section {
    padding: var(--spacing-xl) var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.audit-container {
    background: var(--bg-white);
    border-radius: 16px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border-top: 6px solid var(--enr-bright-green);
}

.audit-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.audit-header h2 {
    font-size: var(--font-size-2xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.audit-header .value-tag {
    display: inline-block;
    background: var(--enr-bright-green);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* Form Styles */
.form-section {
    margin-bottom: var(--spacing-lg);
}

.form-section h3 {
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--enr-bright-green);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-field {
    margin-bottom: var(--spacing-md);
}

.form-field label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: var(--font-size-sm);
}

.form-field input,
.form-field select,
.form-field textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-light);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    background: var(--bg-white);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--enr-bright-green);
    box-shadow: 0 0 0 3px rgba(124, 179, 66, 0.1);
}

.form-field textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-green);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: var(--font-size-lg);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.trust-signals {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: 8px;
    text-align: center;
    color: var(--text-gray);
    font-size: var(--font-size-sm);
}

.trust-signals div {
    margin: 0.25rem 0;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background: var(--gradient-green-reverse);
    color: white;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-branding {
    text-align: center;
}

.footer-powered-logo {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
    text-decoration: underline;
}

.footer-separator {
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
}

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

@media (max-width: 768px) {
    /* Typography adjustments */
    :root {
        --font-size-3xl: 2rem;
        --font-size-2xl: 1.5rem;
        --font-size-xl: 1.25rem;
    }

    /* Navbar */
    .navbar {
        padding: 0.75rem 0;
    }

    .navbar-container {
        padding: 0 var(--spacing-md);
    }

    .logo-main {
        height: 50px;
    }

    .lang-dropdown-button {
        padding: 0.4rem 0.75rem;
        font-size: 0.9rem;
    }

    /* Hero */
    .hero {
        padding: 6rem 1rem 3rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero .subtitle {
        font-size: 1rem;
    }

    .powered-by-logo {
        height: 40px;
    }

    /* Calculator */
    .calculator-container,
    .audit-container {
        padding: var(--spacing-lg);
    }

    /* Forms */
    .form-row {
        grid-template-columns: 1fr;
    }

    .btn-group {
        flex-direction: column;
    }

    /* Language Modal */
    .lang-modal {
        padding: 2rem 1.5rem;
    }

    .lang-modal h2 {
        font-size: 1.5rem;
    }

    .lang-modal-options {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .footer-separator {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }

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

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }