:root {
    --primary: #9b57d3;
    --secondary: #f6e8dd;
    --light-purple: #e9d7f3;
    --text-dark: #2c3e50;
    --text-light: #666;
    --border: #e0e0e0;
    --bg-light: #f9f7f4;
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #fefdfb;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

/* ========== NAVIGATION ========== */
.navbar {
    background: linear-gradient(135deg, var(--primary) 0%, #7a3fa1 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(155, 87, 211, 0.2);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    min-width: 100px;
}

.beta-tag {
    background: rgba(255,255,255,0.25);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 0.5rem;
    vertical-align: middle;
    border: 1px solid rgba(255,255,255,0.4);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.btn-back {
    background: white;
    color: var(--primary);
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Poppins', sans-serif;
    text-decoration: none;
}

.btn-back:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

/* ========== ABOUT SECTION ========== */
.about-section {
    padding: 3rem 0 4rem;
}

/* ========== SECTIONS ========== */
.section {
    margin-bottom: 4rem;
}

.section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
    border-bottom: 3px solid var(--secondary);
    padding-bottom: 1rem;
}

.section h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--primary);
}

/* ========== STORY CONTENT ========== */
.story-content {
    max-width: 800px;
}

.story-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.story-content p:last-child {
    margin-bottom: 0;
}

.story-content strong {
    color: var(--text-dark);
    font-weight: 600;
}

.cta-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid var(--primary);
}

.cta-link:hover {
    opacity: 0.8;
}

/* ========== INSTAGRAM LINKS ========== */
.instagram-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.instagram-card {
    border-radius: 28px;
    padding: 3rem 2rem;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    position: relative;
    overflow: hidden;
}

.instagram-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.2);
}

/* Flow Card */
.flow-card {
    background: linear-gradient(135deg, #9b57d3 0%, #b37ae6 100%);
    color: white;
}

/* Power Card */
.power-card {
    background: linear-gradient(135deg, #665eb8 0%, #7470c3 100%);
    color: white;
}

.logo-circle {
    width: 100px;
    height: 100px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.flow-logo svg {
    width: 100%;
    height: 100%;
}

.power-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.instagram-card h4 {
    color: white;
    margin-bottom: 0.8rem;
    font-size: 1.4rem;
    font-weight: 700;
}

.instagram-card p {
    color: rgba(255,255,255,0.95);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
}

/* ========== PROCESS TIMELINE ========== */
.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
    align-items: stretch;
    max-width: 100%;
    width: 100%;
}

.process-step {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-align: center;
    border: 2px solid var(--border);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 320px;
}

.process-step:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(155, 87, 211, 0.15);
}

.step-circle {
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.process-step h3 {
    color: var(--primary);
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.process-step p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ========== DOCTOR BENEFITS ========== */
.doctor-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.benefit {
    text-align: center;
}

.benefit-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.8rem;
}

.benefit h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.benefit p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ========== THREE COLUMNS ========== */
.three-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.column-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s;
    border: 2px solid var(--border);
}

.column-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(155, 87, 211, 0.15);
}

.column-card .card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.column-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.column-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========== CTA SECTION ========== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, #8a3fbf 100%);
    color: white;
    padding: 4rem 2rem;
    border-radius: 20px;
    text-align: center;
    margin: 4rem 0 0;
}

.cta-section h2 {
    color: white;
    border-bottom: 3px solid white;
    margin-bottom: 2rem;
    font-size: 2.2rem;
    padding-bottom: 1.5rem;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    border: none;
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    text-align: center;
    font-size: 1.05rem;
}

.btn-primary {
    background: white;
    color: var(--primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.btn.large {
    padding: 16px 45px;
    font-size: 1.1rem;
}

/* ========== FOOTER ========== */
footer {
    background: var(--text-dark);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

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

footer a:hover {
    color: white;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .container-nav {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .nav-right {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }

    .btn-back {
        width: 100%;
        text-align: center;
    }

    .section h2 {
        font-size: 1.5rem;
    }

    .story-content p {
        font-size: 1rem;
    }

    .instagram-links {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

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

    .doctor-benefits {
        grid-template-columns: 1fr;
    }

    .instagram-card {
        min-height: 280px;
        padding: 2.5rem 1.5rem;
    }

    .logo-circle {
        width: 80px;
        height: 80px;
        margin-bottom: 1rem;
    }

    .instagram-card h4 {
        font-size: 1.2rem;
    }

    .instagram-card p {
        font-size: 0.9rem;
    }
}