/* ==========================================================================
   ECOCLEAN HOME - Design System & Styles
   "Clean & Fresh Minimalism" Theme
   ========================================================================== */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg-beige: #F9F7F3;
    --color-bg-white: #FFFFFF;
    --color-accent-mint: #A8DADC;
    --color-accent-sage: #457B9D;
    --color-accent-leaf: #2A9D8F;
    --color-text-charcoal: #264653;
    --color-gold: #FFD700;
    --color-skin-light: #F5E6D3;
    --color-skin-medium: #E8D5C4;
    
    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 18px;
    --font-size-sm: 16px;
    --font-size-lg: 22px;
    --font-size-xl: 28px;
    --font-size-2xl: 36px;
    --font-size-3xl: 48px;
    --font-size-4xl: 56px;
    
    /* Spacing & Layout */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-section: 80px;
    --container-max-width: 1200px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(38, 70, 83, 0.08);
    --shadow-md: 0 4px 16px rgba(38, 70, 83, 0.12);
    --shadow-lg: 0 8px 32px rgba(38, 70, 83, 0.16);
    --shadow-soft: 0 4px 20px rgba(168, 218, 220, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-header: 100;
    --z-modal: 200;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-charcoal);
    background-color: var(--color-bg-white);
    overflow-x: hidden;
}

/* Accessibility: Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-highlight {
    color: var(--color-accent-leaf);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-charcoal);
}

/* ==========================================================================
   BUTTON COMPONENT
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 48px; /* Touch-friendly */
}

.btn--primary {
    background-color: var(--color-accent-leaf);
    color: var(--color-bg-white);
    box-shadow: var(--shadow-sm);
}

.btn--primary:hover,
.btn--primary:focus {
    background-color: #238b7a;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-accent-leaf);
    border: 2px solid var(--color-accent-leaf);
}

.btn--secondary:hover,
.btn--secondary:focus {
    background-color: var(--color-accent-mint);
    color: var(--color-text-charcoal);
    border-color: var(--color-accent-mint);
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn--full {
    width: 100%;
}

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-header);
    padding: var(--spacing-md) 0;
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--color-text-charcoal);
}

.logo__icon {
    width: 40px;
    height: 40px;
}

.logo__text {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

/* Navigation */
.nav__list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav__link {
    text-decoration: none;
    color: var(--color-text-charcoal);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link:focus {
    color: var(--color-accent-leaf);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--color-text-charcoal);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    padding: calc(var(--spacing-section) + 80px) 0 var(--spacing-section);
    background-color: var(--color-bg-white);
    position: relative;
    overflow: hidden;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero__title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-charcoal);
    opacity: 0.9;
}

.hero__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.hero__image-wrapper {
    position: relative;
}

.hero__image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--color-accent-mint) 0%, #E8F4F0 100%);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero__image-placeholder svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Decorative leaf pattern */
.leaf-pattern {
    position: absolute;
    opacity: 0.05;
    pointer-events: none;
    background-repeat: repeat;
    background-size: 100px;
}

.leaf-pattern--hero {
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M50 10 C60 30 80 40 90 50 C80 60 60 70 50 90 C40 70 20 60 10 50 C20 40 40 30 50 10 Z' fill='%232A9D8F'/%3E%3C/svg%3E");
}

/* ==========================================================================
   BENEFITS SECTION
   ========================================================================== */
.benefits {
    padding: var(--spacing-section) 0;
    background-color: var(--color-bg-beige);
    position: relative;
}

.benefits__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.benefit-card {
    background-color: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-base);
}

.benefit-card:hover {
    box-shadow: var(--shadow-soft);
    transform: translateY(-4px);
}

.benefit-card__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
}

.benefit-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-charcoal);
}

.benefit-card__text {
    font-size: var(--font-size-base);
    line-height: 1.7;
    opacity: 0.85;
}

/* Droplet pattern background */
.droplet-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.05;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cellipse cx='50' cy='50' rx='30' ry='40' fill='%23457B9D'/%3E%3C/svg%3E");
    background-size: 80px;
}

/* ==========================================================================
   HOW IT WORKS SECTION
   ========================================================================== */
.how-it-works {
    padding: var(--spacing-section) 0;
    background-color: var(--color-bg-white);
}

.timeline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.timeline__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
}

.timeline__number {
    width: 60px;
    height: 60px;
    background-color: var(--color-accent-mint);
    color: var(--color-text-charcoal);
    font-size: var(--font-size-xl);
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.timeline__content {
    padding: 0 var(--spacing-sm);
}

.timeline__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline__text {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    opacity: 0.85;
}

.timeline__connector {
    width: 60px;
    height: 3px;
    background: repeating-linear-gradient(
        to right,
        var(--color-accent-mint) 0,
        var(--color-accent-mint) 10px,
        transparent 10px,
        transparent 20px
    );
    margin-top: 30px;
}

/* ==========================================================================
   TESTIMONIALS SECTION
   ========================================================================== */
.testimonials {
    padding: var(--spacing-section) 0;
    background-color: var(--color-accent-mint);
    background: linear-gradient(180deg, var(--color-accent-mint) 0%, #C8E8E4 100%);
}

.testimonials__slider {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.testimonial-card {
    background-color: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.testimonial-card__rating {
    display: flex;
    gap: 4px;
    margin-bottom: var(--spacing-md);
}

.testimonial-card__rating svg {
    width: 24px;
    height: 24px;
}

.testimonial-card__quote {
    font-size: var(--font-size-lg);
    font-style: italic;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-charcoal);
}

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

.testimonial-card__avatar {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
}

.testimonial-card__avatar svg {
    width: 100%;
    height: 100%;
}

.testimonial-card__info {
    display: flex;
    flex-direction: column;
}

.testimonial-card__name {
    font-weight: 600;
    font-style: normal;
    font-size: var(--font-size-base);
}

.testimonial-card__location {
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

/* ==========================================================================
   BOOKING FORM SECTION
   ========================================================================== */
.booking {
    padding: var(--spacing-section) 0;
    background-color: var(--color-bg-beige);
    position: relative;
}

.booking__card {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.booking__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.booking__subtitle {
    text-align: center;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent-leaf);
    font-weight: 500;
}

.booking__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.form__row--cols-2 {
    grid-template-columns: 1fr 1fr;
    display: grid;
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
}

.form__label {
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--color-text-charcoal);
}

.form__input,
.form__select {
    padding: var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    border: 2px solid var(--color-accent-mint);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-white);
    color: var(--color-text-charcoal);
    transition: all var(--transition-fast);
    min-height: 48px; /* Touch-friendly */
}

.form__input:focus,
.form__select:focus {
    outline: none;
    border-color: var(--color-accent-leaf);
    box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.2);
}

.form__input::placeholder {
    color: var(--color-text-charcoal);
    opacity: 0.5;
}

.form__select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23264653' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 48px;
}

.booking__submit {
    margin-top: var(--spacing-md);
    transition: all var(--transition-base);
}

.booking__submit:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Leaf pattern for booking section */
.leaf-pattern--booking {
    bottom: 0;
    left: 0;
    width: 250px;
    height: 250px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M50 10 C60 30 80 40 90 50 C80 60 60 70 50 90 C40 70 20 60 10 50 C20 40 40 30 50 10 Z' fill='%232A9D8F'/%3E%3C/svg%3E");
    background-size: 80px;
    opacity: 0.03;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background-color: var(--color-text-charcoal);
    color: var(--color-bg-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand .logo__text {
    color: var(--color-bg-white);
}

.footer__tagline {
    margin-top: var(--spacing-sm);
    opacity: 0.8;
    font-size: var(--font-size-sm);
}

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

.footer__social-label {
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-bg-white);
    transition: all var(--transition-fast);
}

.social-link:hover,
.social-link:focus {
    background-color: var(--color-accent-leaf);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer__bottom {
    padding-top: var(--spacing-md);
}

.footer__bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

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

.footer__link {
    color: var(--color-bg-white);
    text-decoration: none;
    font-size: var(--font-size-sm);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer__link:hover,
.footer__link:focus {
    opacity: 1;
    text-decoration: underline;
}

/* ==========================================================================
   ANIMATIONS (Fade In Up)
   ========================================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN (Mobile First)
   ========================================================================== */

/* Tablet: 768px and up */
@media (max-width: 992px) {
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__buttons {
        justify-content: center;
    }
    
    .hero__title {
        font-size: var(--font-size-3xl);
    }
    
    .benefits__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials__slider {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        flex-direction: column;
    }
    
    .timeline__connector {
        width: 3px;
        height: 40px;
        background: repeating-linear-gradient(
            to bottom,
            var(--color-accent-mint) 0,
            var(--color-accent-mint) 10px,
            transparent 10px,
            transparent 20px
        );
        margin: 0;
    }
}

/* Mobile: 768px and below */
@media (max-width: 768px) {
    :root {
        --spacing-section: 60px;
        --font-size-4xl: 40px;
        --font-size-3xl: 32px;
    }
    
    /* Header */
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--color-bg-white);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        opacity: 0;
        transition: all var(--transition-base);
        z-index: calc(var(--z-header) - 1);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav__list {
        flex-direction: column;
        align-items: center;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .header__cta {
        display: none;
    }
    
    /* Benefits */
    .benefits__grid {
        grid-template-columns: 1fr;
    }
    
    /* Form */
    .form__row--cols-2 {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer__container {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .footer__bottom-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer__links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Small Mobile: 480px and below */
@media (max-width: 480px) {
    .hero__buttons {
        flex-direction: column;
    }
    
    .btn--large {
        width: 100%;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .booking__card {
        padding: var(--spacing-lg);
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */
@media print {
    .header,
    .booking__form,
    .mobile-menu-toggle {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .hero,
    .benefits,
    .how-it-works,
    .testimonials {
        padding: 20pt 0;
    }
}