:root {
    --white: #fff;
    --black: #000;
    --dark-gray: #222;
    --gray: #f5f5f5;
    --primary-color: #000;
    --content-gap-v: 2.5rem;
}

/* ===== GLOBAL & LAYOUT ===== */
* { margin:0; padding:0; box-sizing:border-box; }
body, html { height:100%; }
body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--gray);
    color: var(--dark-gray);
    line-height:1.6;
}

.page-wrapper { display:flex; flex-direction:column; min-height:100vh; }

a { text-decoration:none; color: var(--primary-color); }

/* Container */
.container {
    width:90%;
    max-width:1200px;
    margin:0 auto;
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
}

/* ===== Header Navigation ===== */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-family: 'Recline', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--dark-gray);
    font-weight: 400;
    transition: color 0.3s;
}

.nav-menu a:hover { color: var(--black); }
.nav-menu a.active { color: var(--black); font-weight: 500; }

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}
.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--black);
    transition: 0.3s;
}

/* Mobile menu behavior */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }

    .nav-menu.active { display: flex; }
    .mobile-menu-toggle { display: flex; }
}

/* ===== HERO (Desktop/Default) ===== */
.hero { 
    flex: 1 0 auto;
    display:flex; 
    align-items:center; 
    justify-content: center;
    padding:3rem 0; 
}

.hero-container {
    display:flex;
    flex-wrap:wrap;
    gap:3rem;
    align-items:center;
    justify-content:space-between;
    width:90%;
    max-width:1200px;
    margin: 0 auto;
}

.hero-content { 
    flex:1 1 400px; 
    max-width:600px; 
    display:flex; 
    flex-direction:column; 
}

.hero-title { 
    font-family:'Recline', sans-serif; 
    font-size:3.5rem; 
    margin-bottom:1rem; 
    line-height:1.1; 
}

.hero-subtitle { 
    font-size:1.25rem; 
    margin-bottom:2rem; 
    color: var(--dark-gray); 
}

/* ===== GRID WRAPPER ===== */
.hero-grid {
    display:grid;
    grid-template-rows: auto auto;
    gap:1.5rem;
    justify-items:start;
}

/* ===== BADGES ===== */
.hero-badges { 
    display:flex; 
    flex-wrap:wrap; 
    gap:0.5rem; 
}

.badge { 
    background: var(--black); 
    color: var(--white); 
    font-size:0.85rem; 
    padding:0.35rem 0.75rem; 
    border-radius:4px; 
}

/* ===== FORM ===== */
.hero-form-inline { 
    display:flex; 
    width:100%; 
}

.hero-form-inline input {
    flex:1 1 auto;
    padding:0.85rem 1rem;
    font-size:1rem;
    border:1px solid #ccc;
    border-radius:8px 0 0 8px;
    outline:none;
}
.hero-form-inline input:focus { border-color: var(--black); }

.btn-join-waitlist {
    flex:0 0 auto;
    padding:0.85rem 1.2rem;
    font-size:1rem;
    font-weight:600;
    border-radius:0 8px 8px 0;
    border:none;
    background-color: var(--black);
    color: var(--white);
    cursor:pointer;
    transition:0.3s;
}
.btn-join-waitlist:hover { background-color:#333; }

/* ===== BOOK VISUAL ===== */
.hero-visual { 
    flex:1 1 400px; 
    text-align:center; 
}

.book-cover { 
    width:100%; 
    max-width:350px; 
    border-radius:6px; 
    box-shadow:0 15px 30px rgba(0,0,0,0.3); 
}

/* ===== FOOTER ===== */
.footer {
    flex-shrink: 0;
    background-color: var(--white);
    padding:2rem 0;
    text-align:center;
    border-top:1px solid #ddd;
    color: var(--dark-gray);
}

/* ===== Desktop tweaks for larger screens ===== */
@media (min-width: 1024px) {
    .hero-title { font-size: 3.5rem; }
    .hero-subtitle { font-size: 1.25rem; }
}

/* ====================================================
   RESPONSIVE FIXES FOR TABLETS & MOBILES
   ==================================================== */

/* Tablet portrait and mobile devices up to 768px */
@media (max-width: 768px) {
    .hero {
        padding: 4rem 0;
        min-height: auto;
        display: flex;
        align-items: center;
    }

    .hero-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 0.2rem;
        width: 90%;
        max-width: 540px;
        margin: 0 auto;
    }

    .hero-content {
        align-items: center;
        max-width: 100%;
        text-align: center;
        width: 100%;
    }

    .hero-title {
        font-size: 2.8rem;
        margin-bottom: 0.8rem;
    }

    .hero-subtitle {
        font-size: 1.08rem;
        margin-bottom: 20px;
        line-height: 1.5;
    }

    /* Hero-grid: improved spacing rhythm */
    .hero-grid {
        width: 100%;
        justify-items: center;
        gap: 24px;
        margin: 0 auto;
    }

    /* Badges: equalized widths and consistent spacing */
    .hero-badges {
        display: flex;
        justify-content: center;
        gap: 10px;
        width: 100%;
    }

    .badge {
        flex: 1 1 0;
        min-width: 0;
        text-align: center;
        font-size: 0.88rem;
        padding: 10px 12px;
        border-radius: 8px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Form: stacked with matched widths and proper spacing */
    .hero-form-inline {
        display: flex;
        flex-direction: column;
        width: 100%;
        gap: 10px;
        align-items: stretch;
        margin-top: 0;
    }

    .hero-form-inline input,
    .hero-form-inline .btn-join-waitlist {
        width: 100%;
        border-radius: 10px;
        box-sizing: border-box;
    }

    .hero-form-inline input {
        padding: 13px 16px;
        font-size: 1rem;
        border: 1px solid #d6d6d6;
    }

    .btn-join-waitlist {
        padding: 13px 16px;
        font-size: 1rem;
        font-weight: 600;
    }

    .hero-visual {
        order: 2;
        width: 100%;
    }
}

/* Mobile phones up to 420px */
@media (max-width: 420px) {
    .hero {
        padding: 2.5rem 0;
        display: flex;
        align-items: center;
    }

    .hero-container {
        gap: 0;
        width: 88%;
        max-width: 400px;
        margin: 0 auto;
    }

    .hero-content {
        width: 100%;
    }

    .hero-title {
        font-size: 2.2rem;
        margin-bottom: 0.8rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
        margin-bottom: 18px;
        line-height: 1.5;
    }

    .hero-grid {
        width: 100%;
        gap: 20px;
    }

    .hero-badges {
        gap: 8px;
        width: 100%;
        justify-content: center;
    }

    .badge {
        flex: 1 1 0;
        min-width: 0;
        padding: 10px 10px;
        font-size: 0.88rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .hero-form-inline {
        flex-direction: column;
        gap: 12px;
        width: 100%;
    }

    .hero-form-inline input,
    .hero-form-inline .btn-join-waitlist {
        width: 100%;
        border-radius: 8px;
    }

    .hero-form-inline input {
        padding: 14px 16px;
        font-size: 1.05rem;
    }

    .btn-join-waitlist {
        padding: 14px 16px;
        font-size: 1.05rem;
    }

    .hero-visual {
        width: 100%;
    }

    .book-cover {
        max-width: 320px;
        margin-top: 0;
    }
}

/* Smallest phones up to 375px */
@media (max-width: 375px) {
    .hero {
        padding: 2.5rem 0;
    }

    .hero-container {
        gap: 0;
        width: 86%;
        max-width: 340px;
        margin: 0 auto;
    }

    .hero-content {
        width: 100%;
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: 0.7rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 16px;
    }

    .hero-grid {
        width: 100%;
        gap: 18px;
    }

    .badge {
        font-size: 0.85rem;
        padding: 9px 8px;
    }

    .hero-form-inline {
        gap: 11px;
    }

    .hero-form-inline input {
        padding: 13px 14px;
        font-size: 1.02rem;
    }

    .btn-join-waitlist {
        padding: 13px 14px;
        font-size: 1.02rem;
    }

    .hero-visual {
        width: 100%;
    }

    .book-cover {
        max-width: 280px;
    }
}

/* Accessibility focus styles */
.hero-form-inline input:focus,
.waitlist-form-inline input:focus {
    box-shadow: 0 0 0 3px rgba(0,0,0,0.06);
    outline: none;
}