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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* ─── Navigation ─────────────────────────────────────────────── */
nav {
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    /* Needed so the absolute menu-toggle is positioned relative to nav */
    position: fixed;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    align-items: center;
}

nav a {
    color: #666;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    /* Ensure comfortable touch target */
    min-height: 44px;
}

nav a:hover {
    color: #e74c3c;
}

/* ─── Dropdown ────────────────────────────────────────────────── */
.dropdown {
    position: relative;
}

.features-text {
    font-weight: 600;
}

.dropdown-toggle {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.5rem;
    color: #666;
    font-weight: 500;
    user-select: none;
    min-height: 44px;
}

.dropdown-arrow {
    font-size: 0.7rem;
    transition: transform 0.3s;
}

.dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: white;
    min-width: 250px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    border-radius: 10px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
    margin-top: 0.5rem;
    padding: 0.5rem 0;
    max-height: 0;
    overflow: hidden;
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    max-height: 500px;
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: #666;
    text-decoration: none;
    transition: background 0.3s, color 0.3s;
    border-radius: 5px;
    margin: 0 0.5rem;
    min-height: 44px;
}

.dropdown-menu a:hover {
    background: #f8f8f8;
    color: #e74c3c;
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    /* Ensure comfortable touch target */
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

/* ─── Hero ────────────────────────────────────────────────────── */
.hero {
    background: linear-gradient(to bottom, #ffcccb 0%, #ff6b6b 50%, #e74c3c 100%);
    color: white;
    text-align: center;
    padding: 120px 2rem 80px;
    margin-top: 60px;
}

.hero-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.hero-icon {
    background: white;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.hero-icon img {
    width: 70px;
    height: 70px;
    transform: rotate(30deg);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50%       { transform: translateY(-10px); }
}

.hero h1 {
    font-weight: bold;
    letter-spacing: 2px;
    margin: 0;
    /* Fluid type: scales from 1.8rem (320px) up to 3.125rem (desktop) */
    font-size: clamp(1.8rem, 5vw, 3.125rem);
}

.hero .tagline {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    margin-bottom: 1.5rem;
}

.hero .description {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.95;
}

/* ─── Features ────────────────────────────────────────────────── */
.features {
    padding: 80px 2rem;
    background: #f8f8f8;
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: #e74c3c;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: #999;
    max-width: 700px;
    margin: 0 auto 4rem;
    font-size: clamp(0.95rem, 2vw, 1.1rem);
}

.features-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    /* First 3 cards: 3-column row */
    flex: 0 1 calc(33.333% - 2rem);
    min-width: 250px;
}

.feature-card:nth-child(n+4) {
    /* Remaining cards: 2-column row */
    flex: 0 1 calc(50% - 2rem);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: #e74c3c;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-icon img {
    width: 50px;
    height: 50px;
}

.feature-card h3 {
    color: #e74c3c;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.feature-card a {
    color: #e74c3c;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* ─── Tech Stack ──────────────────────────────────────────────── */
.tech-stack {
    background: #e74c3c;
    color: white;
    padding: 3rem 2rem;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

.tech-item {
    text-align: center;
    flex: 1;
    min-width: 200px;
}

.tech-item h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.tech-item p {
    opacity: 0.9;
}

/* ─── How It Works ────────────────────────────────────────────── */
.how-it-works {
    padding: 80px 2rem;
    background: white;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 4rem auto 0;
}

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #e74c3c;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step-icon {
    width: 100px;
    height: 100px;
    background: #e74c3c;
    border-radius: 50%;
    margin: 1rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.step-icon img {
    width: 50px;
    height: 50px;
}

.step-icon-1 {
    width: 110px;
    height: 110px;
    background: #e74c3c;
    border-radius: 50%;
    margin: 1rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.step-icon-1 img {
    width: 70px;
    height: 70px;
}

.step h3 {
    color: #333;
    margin-top: 1rem;
    font-size: 1.2rem;
}

.step p {
    color: #999;
}

/* ─── Footer ──────────────────────────────────────────────────── */
footer {
    background: #e74c3c;
    color: white;
    padding: 3rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: white;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-brand-icon {
    background: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.footer-brand-icon img {
    width: 30px;
    height: 30px;
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.8;
}

/* ─── Toast ───────────────────────────────────────────────────── */
.toast {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 320px;
    background: white;
    padding: 14px 16px;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    display: none;
    align-items: center;
    gap: 12px;
    z-index: 9999;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.show {
    display: flex;
    opacity: 1;
    transform: translateX(0);
}

#toastIcon {
    font-size: 22px;
    flex-shrink: 0;
}

.toast > div {
    flex: 1;
    min-width: 0;
}

#toastTitle {
    font-size: 0.9rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 0 0 3px 0;
    display: block;
}

#toastMsg {
    font-size: 0.8rem;
    color: #7f8c8d;
    margin: 0;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
}

/* ─── Tablet: ≤ 768px ─────────────────────────────────────────── */
@media (max-width: 768px) {
    /* Nav — mobile menu */
    .menu-toggle {
        display: flex;
    }

    nav ul {
        display: none;
        flex-direction: column;
        align-items: center;
        width: 100%;
        padding: 1rem 0;
        gap: 0.5rem;
    }

    nav ul.active {
        display: flex;
    }

    /* Dropdown — static, no absolute positioning */
    .dropdown {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .dropdown-toggle {
        justify-content: center;
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        transform: none;
        box-shadow: none;
        background: transparent;
        min-width: unset;
        width: 100%;
        border-radius: 0;
        /* Override JS-driven max-height with display toggle */
        display: none;
        opacity: 1;
        visibility: visible;
        max-height: none;
        padding: 0.25rem 0;
        overflow: visible;
    }

    .dropdown.active .dropdown-menu {
        display: flex;
        flex-direction: column;
        align-items: center;
        transform: none;
    }

    .dropdown-menu li {
        width: 90%;
        max-width: 300px;
        margin: 2px 0;
    }

    .dropdown-menu a {
        background: #f0f0f0;
        text-align: center;
        border-radius: 8px;
        margin: 0;
        width: 100%;
    }

    .dropdown-menu a:hover {
        background: #e0e0e0;
    }

    /* Hero */
    .hero {
        padding: 100px 1.5rem 60px;
    }

    .hero-icon {
        width: 80px;
        height: 80px;
    }

    .hero-icon img {
        width: 55px;
        height: 55px;
    }

    /* Feature cards — 2 columns on tablet */
    .feature-card,
    .feature-card:nth-child(n+4) {
        flex: 0 1 calc(50% - 1.5rem);
        min-width: 200px;
    }

    .features-grid {
        gap: 1.5rem;
    }

    /* Tech stack — stack vertically */
    .tech-stack {
        flex-direction: column;
        align-items: center;
    }

    .tech-item {
        min-width: unset;
        width: 100%;
        max-width: 400px;
    }

    /* How it works — 2 columns */
    .steps {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 2rem;
    }

    /* Footer */
    .footer-content {
        gap: 2rem;
    }

    /* Toast — narrower on tablet */
    .toast {
        width: calc(100vw - 40px);
        max-width: 320px;
    }
}

/* ─── Mobile: ≤ 480px ─────────────────────────────────────────── */
@media (max-width: 480px) {
    .hero {
        padding: 90px 1rem 50px;
    }

    .hero-title {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero-icon {
        width: 70px;
        height: 70px;
    }

    .hero-icon img {
        width: 48px;
        height: 48px;
    }

    .features,
    .how-it-works {
        padding: 50px 1rem;
    }

    /* Feature cards — single column on small phones */
    .feature-card,
    .feature-card:nth-child(n+4) {
        flex: 0 1 100%;
        min-width: 100%;
        padding: 1.5rem;
    }

    /* Steps — single column */
    .steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Footer columns — single column */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Toast — full width with margin */
    .toast {
        right: 10px;
        left: 10px;
        width: auto;
        max-width: none;
    }
}