/* Roofing Calculator Styles - Premium Edition */

/* Design System Variables */
:root {
    /* Colors */
    --primary-color: #0F172A; /* Deep Navy */
    --primary-light: #334155;
    --accent-color: #F59E0B; /* Amber/Gold */
    --accent-hover: #D97706;
    --accent-glow: rgba(245, 158, 11, 0.4);

    --text-light: #F8FAFC;
    --text-muted: #94A3B8;
    --text-dark: #1E293B;

    --bg-body: #F1F5F9;
    --surface-glass: rgba(255, 255, 255, 0.95);
    --surface-glass-dark: rgba(15, 23, 42, 0.9);

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.8));
    --gradient-accent: linear-gradient(135deg, #F59E0B, #D97706);

    /* Shadows */
    --shadow-card: 0 20px 40px -5px rgba(0, 0, 0, 0.1), 0 10px 20px -5px rgba(0, 0, 0, 0.05);
    --shadow-float: 0 -5px 20px rgba(0,0,0,0.1);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    /* Spacing & Layout */
    --container-width: 1100px;
    --radius-lg: 24px;
    --radius-md: 12px;
    --radius-full: 9999px;
}

/* Reset & Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-body);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
ul { list-style: none; }

h1, h2, h3 {
    font-weight: 800;
    line-height: 1.1;
    color: var(--primary-color);
}

/* 3D Canvas Background */
#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    opacity: 0.6;
}

/* Hero Section */
.hero {
    position: relative;
    height: 85vh; /* Taller hero */
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    overflow: hidden;
    /* Removed static background image for 3D effect, using gradient overlay */
    background: radial-gradient(circle at center, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 1) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 2rem;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: #fff;
    text-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.hero-title .line {
    display: block;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

@media (min-width: 768px) {
    .hero-title { font-size: 4.5rem; }
    .hero .subtitle { font-size: 1.5rem; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1.1rem;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 25px var(--accent-glow);
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.3);
    color: white;
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.1);
    transform: translateY(-3px);
}

.btn-sm {
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
}

.btn-outline-dark {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}
.btn-outline-dark:hover {
    background: var(--primary-color);
    color: white;
}

/* Calculator Section & Glassmorphism */
.calculator-section {
    position: relative;
    margin-top: -120px;
    padding-bottom: 6rem;
    z-index: 10;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.calculator-card {
    background: var(--surface-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 3rem;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

/* Wizard Steps */
.wizard-step {
    display: none;
    animation: fadeInStep 0.5s ease forwards;
}

.wizard-step.active {
    display: block;
}

@keyframes fadeInStep {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.step-header h2 { font-size: 2rem; margin-bottom: 0.5rem; }
.step-header p { color: var(--text-muted); }

/* Progress Bar */
.progress-container {
    margin-bottom: 3rem;
    position: relative;
    padding: 0 1rem;
}

.progress-bar-bg {
    background: #E2E8F0;
    height: 6px;
    border-radius: 3px;
    position: relative;
    top: 14px;
    z-index: 1;
}

.progress-bar-fill {
    background: var(--accent-color);
    height: 100%;
    border-radius: 3px;
    width: 20%;
    transition: width 0.4s ease;
}

.steps-indicator {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.step-dot {
    width: 34px;
    height: 34px;
    background: #E2E8F0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-muted);
    font-size: 0.9rem;
    border: 3px solid var(--surface-glass);
    transition: all 0.3s ease;
    /* Prevent clicking on future steps by default */
    cursor: default; 
    pointer-events: none;
}

/* Allow clicking on active/completed steps */
.step-dot.active, 
.step-dot.completed {
    cursor: pointer;
    pointer-events: auto;
}

.step-dot.active {
    background: var(--accent-color);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.2);
}

/* Style for steps we've already passed (optional but good for UX) */
.step-dot.completed {
    background: var(--primary-light);
    color: white;
}

.step-dot.active {
    background: var(--accent-color);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.2);
}

/* Form Inputs */
.form-group { margin-bottom: 2rem; }
.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.centered-input { text-align: center; }
.centered-input input { max-width: 300px; margin: 0 auto; text-align: center; letter-spacing: 2px; font-size: 1.5rem; }

/* Range Slider */
.slider-container { padding: 1rem 0; text-align: center; }
.slider-val-display {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 12px;
    border-radius: 6px;
    background: #E2E8F0;
    outline: none;
    margin: 1rem 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s;
    border: 4px solid white;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

.slider-labels { display: flex; justify-content: space-between; color: var(--text-muted); font-size: 0.9rem; font-weight: 600; }

/* Shape Grid (SVG) */
.shape-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
@media(min-width: 600px) {
    .shape-grid { grid-template-columns: repeat(4, 1fr); }
}

.shape-option {
    background: #fff;
    border: 2px solid #E2E8F0;
    border-radius: var(--radius-md);
    padding: 1.5rem 0.5rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

.shape-option:hover { border-color: var(--accent-color); transform: translateY(-3px); }
.shape-option.selected {
    border-color: var(--accent-color);
    background: rgba(245, 158, 11, 0.05);
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

.roof-icon {
    width: 60px;
    height: 40px;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

.shape-option.selected .roof-icon { color: var(--accent-color); }
.shape-option:hover .roof-icon { color: var(--primary-color); }

/* Select & Inputs */
select, input[type="text"] {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #E2E8F0;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    background-color: #fff;
    transition: border-color 0.2s;
}
select:focus, input:focus { outline: none; border-color: var(--accent-color); }

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}
@media(min-width: 768px) { .form-grid-2 { grid-template-columns: 1fr 1fr; } }

/* Extras Toggles */
.extras-grid {
    display: grid;
    gap: 1rem;
}
@media(min-width: 600px) { .extras-grid { grid-template-columns: 1fr 1fr; } }

.extra-item {
    background: #fff;
    border: 1px solid #E2E8F0;
    padding: 1.25rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.extra-info { display: flex; flex-direction: column; }
.extra-title { font-weight: 700; color: var(--primary-color); }
.extra-desc { font-size: 0.85rem; color: var(--text-muted); }

/* Switch Toggle */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #CBD5E1;
    transition: .4s;
    border-radius: 34px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--accent-color); }
input:checked + .slider:before { transform: translateX(22px); }

/* Navigation Buttons */
.step-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    align-items: center;
}
.btn-text { color: var(--text-muted); font-weight: 600; text-decoration: underline; font-size: 0.9rem; }
.btn-text:hover { color: var(--primary-color); }

/* Results */
.results-container { text-align: center; }
.price-display { margin: 2rem 0; padding: 2rem; background: rgba(255,255,255,0.5); border-radius: var(--radius-md); }
.price-range { font-size: 3rem; font-weight: 800; color: var(--primary-color); letter-spacing: -1px; margin: 0.5rem 0; }
.label { text-transform: uppercase; letter-spacing: 1px; font-size: 0.8rem; font-weight: 700; color: var(--text-muted); }

.vertical-stack { display: flex; flex-direction: column; gap: 1rem; max-width: 400px; margin: 0 auto; }
.full-width { width: 100%; justify-content: center; }
.btn-whatsapp { background-color: #25D366; color: white; border: none; }
.btn-whatsapp:hover { background-color: #1FAF54; }
.btn-sms { background-color: #3B82F6; color: white; }
.btn-sms:hover { background-color: #2563EB; }
.btn-call { background-color: var(--primary-color); color: white; }

.icon { margin-right: 8px; font-size: 1.2rem; }

/* Floating CTA Bar */
.floating-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--surface-glass);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0,0,0,0.1);
    padding: 1rem 1.5rem;
    z-index: 100;
    box-shadow: var(--shadow-float);
    transform: translateY(100%); /* Hidden by default */
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-cta.visible { transform: translateY(0); }

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

.cta-text { font-weight: 700; color: var(--primary-color); font-size: 1rem; }
.cta-buttons { display: flex; gap: 0.75rem; }

@media (max-width: 600px) {
    .cta-text { display: none; }
    .cta-buttons { width: 100%; justify-content: space-between; }
    .cta-buttons .btn { flex: 1; }
    .hero-title { font-size: 2.5rem; }
    .calculator-card { padding: 1.5rem; }
}