/* ========================================
   Redwood Roofing - Luxury Design System
   ======================================== */

/* CSS Variables - Color Palette & Design Tokens */
:root {
    /* Primary Colors */
    --color-accent: #b80014;
    --color-accent-dark: #8a0010;
    --color-accent-light: #d4001a;

    /* Neutrals */
    --color-cream: #f8f6f3;
    --color-off-white: #fafafa;
    --color-light-gray: #e8e8e8;
    --color-medium-gray: #c4c4c4;
    --color-winter-green: #8b9a8b;
    --color-charcoal: #2c2c2c;
    --color-black: #1a1a1a;

    /* Typography */
    --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Font Sizes */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    --font-size-6xl: 3.75rem;   /* 60px */

    /* Spacing */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 1.5rem;   /* 24px */
    --spacing-lg: 2rem;     /* 32px */
    --spacing-xl: 3rem;     /* 48px */
    --spacing-2xl: 4rem;    /* 64px */
    --spacing-3xl: 6rem;    /* 96px */

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Layout */
    --max-width-container: 1400px;
    --max-width-content: 1200px;
    --max-width-text: 800px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-charcoal);
    background-color: var(--color-off-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--font-size-4xl);
    letter-spacing: -0.01em;
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-dark);
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    transition: opacity var(--transition-fast);
}

.nav-logo:hover {
    opacity: 0.8;
}

.nav-logo-img {
    height: 45px;
    width: auto;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-charcoal);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-cta::after {
    display: none;
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-charcoal);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 70px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-image.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.3));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 900px;
    padding: var(--spacing-lg);
}

.hero-title {
    font-size: var(--font-size-6xl);
    color: white;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-cream);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-cta {
    display: inline-flex;
    gap: var(--spacing-md);
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: var(--color-cream);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background: white;
    color: var(--color-accent);
}

/* ========================================
   Sections
   ======================================== */

section {
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.section-header {
    text-align: center;
    max-width: var(--max-width-text);
    margin: 0 auto var(--spacing-2xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-winter-green);
    font-weight: 300;
}

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

/* ========================================
   Grid System
   ======================================== */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ========================================
   Cards
   ======================================== */

.card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.card-description {
    color: var(--color-winter-green);
    margin-bottom: var(--spacing-md);
}

.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

/* ========================================
   Forms
   ======================================== */

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

.form-label {
    display: block;
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-charcoal);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(184, 0, 20, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: none;
}

.form-group.error .form-error {
    display: block;
}

.form-group.error .form-input,
.form-group.error .form-select,
.form-group.error .form-textarea {
    border-color: var(--color-accent);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background-color: var(--color-black);
    color: var(--color-light-gray);
    padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
}

.footer-container {
    max-width: var(--max-width-container);
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    color: white;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-light-gray);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-medium-gray);
}

/* ========================================
   Chatbot
   ======================================== */

.chatbot-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 999;
}

.chatbot-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    transition: all var(--transition-base);
}

.chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 360px;
    height: 500px;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.chatbot-window.active {
    display: flex;
}

.chatbot-header {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-title {
    font-family: var(--font-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.chatbot-close {
    background: none;
    border: none;
    color: white;
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.chatbot-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    background-color: var(--color-cream);
}

.chatbot-message {
    max-width: 80%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.chatbot-message.bot {
    background: white;
    align-self: flex-start;
    box-shadow: var(--shadow-sm);
}

.chatbot-message.user {
    background: var(--color-accent);
    color: white;
    align-self: flex-end;
}

.chatbot-input-container {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-light-gray);
    display: flex;
    gap: var(--spacing-xs);
}

.chatbot-input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.chatbot-input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.chatbot-send {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: background var(--transition-fast);
}

.chatbot-send:hover {
    background: var(--color-accent-dark);
}

/* ========================================
   Animations
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero {
        height: 70vh;
        min-height: 500px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

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

    .hero {
        height: 40vh;
        min-height: 280px;
    }

    .hero-image {
        object-fit: cover !important;
        object-position: center center !important;
    }

    .hero-title {
        font-size: 1.5rem;
        margin-bottom: 0.4rem;
    }

    .hero-subtitle {
        font-size: 0.875rem;
        margin-bottom: 0.5rem;
    }

    .hero-content {
        padding: 1rem;
    }

    .hero-cta {
        display: none;
    }

    .chatbot-window {
        width: calc(100vw - 2rem);
        right: 1rem;
    }

    section {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-5xl: 1.75rem;
        --font-size-4xl: 1.5rem;
    }

    .nav-logo-img {
        height: 36px;
    }

    .chatbot-container {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }

    .hero {
        height: 35vh;
        min-height: 250px;
    }

    .hero-title {
        font-size: 1.5rem;
        margin-bottom: 0.4rem;
    }

    .hero-subtitle {
        font-size: 0.85rem;
        margin-bottom: 0.75rem;
    }

    .chatbot-toggle {
        width: 50px;
        height: 50px;
    }
}

/* ========================================
   Feedback Button & Modal
   ======================================== */

.feedback-toggle {
    position: fixed;
    bottom: var(--spacing-lg);
    right: calc(var(--spacing-lg) + 80px); /* Position to left of chatbot */
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    transition: all var(--transition-base);
    z-index: 998;
}

.feedback-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.feedback-toggle:active {
    transform: scale(1.05);
}

.feedback-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feedback-modal.active {
    display: flex;
    opacity: 1;
}

.feedback-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.feedback-content {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: feedbackSlideIn var(--transition-base);
}

.feedback-header {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.feedback-title {
    font-family: var(--font-primary);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: 0;
    color: white;
}

.feedback-close {
    background: none;
    border: none;
    color: white;
    font-size: var(--font-size-3xl);
    cursor: pointer;
    padding: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background var(--transition-fast);
    line-height: 1;
}

.feedback-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.feedback-body {
    flex: 1;
    overflow: hidden;
    background: var(--color-cream);
}

.feedback-body iframe {
    width: 100%;
    height: 100%;
    min-height: 600px;
    border: none;
}

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

/* Responsive adjustments for feedback */
@media (max-width: 768px) {
    .feedback-toggle {
        right: calc(var(--spacing-md) + 70px);
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }

    .feedback-content {
        width: 95%;
        max-height: 90vh;
    }

    .feedback-body iframe {
        min-height: 500px;
    }
}

@media (max-width: 480px) {
    .feedback-toggle {
        bottom: var(--spacing-md);
        right: calc(var(--spacing-md) + 60px);
    }

    .feedback-content {
        width: 100%;
        height: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .feedback-body iframe {
        min-height: 100%;
    }
}

/* ========================================
   Utility Classes
   ======================================== */

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

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

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

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

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

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

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

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

.hidden {
    display: none;
}

.visible {
    display: block;
}