/* ========================================= */
/* 1. ROOT VARIABLE & RESET                  */
/* ========================================= */
:root {
    --primary-teal: #0f766e;
    --dark-teal: #134e4a;
    --light-bg: #f0fdfa;
    --accent-orange: #f97316;
    --accent-hover: #ea580c;
    --text-dark: #334155;
    --white: #ffffff;
}

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

/* ========================================= */
/* 2. GLOBAL & LAYOUT                        */
/* ========================================= */
body {
    font-family: 'Poppins', sans-serif;
    background-color: #cbd5e1;
    color: var(--text-dark);
    line-height: 1.6;
    padding-bottom: 80px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 15px;
    position: relative;
    z-index: 2;
}

/* ========================================= */
/* 3. HEADER & NAVIGATION                    */
/* ========================================= */
header {
    background-color: var(--primary-teal);
    color: var(--white);
    padding: 25px 0;
    text-align: center;
    border-bottom: 5px solid var(--dark-teal);
    box-shadow: 0 4px 10px rgba(15,118,110,.3);
}

.brand-name {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.sub-brand {
    font-size: .95rem;
    opacity: .9;
    margin-top: 5px;
}

.nav-bar {
    background-color: var(--dark-teal);
    text-align: center;
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px rgba(0,0,0,.1);
}

.nav-bar a {
    color: var(--white);
    text-decoration: none;
    margin: 0 12px;
    font-size: .85rem;
    font-weight: 600;
    text-transform: uppercase;
}
.nav-bar a:hover {
    color: #fbbf24;
}
.logo-okesender {
    max-width: 180px;
    max-height: 90px;
}

/* ========================================= */
/* 4. CONTENT CARD & TYPOGRAPHY              */
/* ========================================= */
.content-box {
    background: var(--white);
    border: 1px solid #cbd5e1;
    border-top: 5px solid var(--primary-teal);
    border-radius: 12px;
    padding: 40px 30px;
    margin-top: 30px;
    box-shadow: 0 10px 25px rgba(0,0,0,.1);
}

h1 { font-size: 2.5rem; color: var(--dark-teal); margin-bottom: 15px; }
h2 { font-size: 1.6rem; color: var(--dark-teal); margin-bottom: 20px; }
h3 { font-size: 1.25rem; margin-bottom: 10px; }

p {
    margin-bottom: 18px;
    font-size: 1rem;
    color: #475569;
}

/* ========================================= */
/* 5. BUTTONS                                */
/* ========================================= */
.btn-cta {
    display: block;
    width: 100%;
    background: linear-gradient(to bottom, var(--accent-orange), var(--accent-hover));
    color: white;
    padding: 18px;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.2rem;
    text-transform: uppercase;
    border: 2px solid #c2410c;
    box-shadow: 0 4px 6px rgba(249,115,22,.4);
    margin-top: 25px;
    animation: pulse 2s infinite;
}
.btn-cta:hover {
    transform: translateY(-3px);
    filter: brightness(1.1);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(249,115,22,.7); }
    70% { box-shadow: 0 0 0 10px rgba(249,115,22,0); }
    100% { box-shadow: 0 0 0 0 rgba(249,115,22,0); }
}

/* ========================================= */
/* 6. IMAGE & MOCKUP                         */
/* ========================================= */
.product-cover {
    width: 100%;
    max-width: 500px;
    margin: 0 auto 20px;
    display: block;
    border-radius: 8px;
    border: 3px solid white;
    box-shadow: 0 5px 15px rgba(0,0,0,.15);
    transform: rotate(-2deg);
}

.img-responsive {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,.1);
}

/* ========================================= */
/* 7. PRICE GRID                             */
/* ========================================= */
.price-grid {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 20px;
    margin-top: 30px;
}

.price-card {
    border: 2px solid var(--primary-teal);
    border-radius: 14px;
    padding: 25px 20px;
    background: white;
    box-shadow: 0 10px 25px rgba(0,0,0,.08);
}

.price-card.highlight {
    border-width: 3px;
    transform: scale(1.03);
}

.price-head {
    background: var(--primary-teal);
    color: white;
    font-weight: 800;
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.price-old {
    text-decoration: line-through;
    color: red;
    font-weight: 700;
    margin-top: 10px;
}

.price-core {
    font-size: 2rem;
    font-weight: 900;
    margin: 5px 0 15px;
}

/* LIST FITUR */
.price-features {
    list-style: none;
    padding: 0;
    margin: 15px 0;
    text-align: left;
}
.price-features li {
    margin-bottom: 8px;
    padding-left: 22px;
    position: relative;
}
.price-features li::before {
    content: "✔";
    position: absolute;
    left: 0;
    color: var(--primary-teal);
    font-weight: bold;
}

/* ========================================= */
/* 8. RESPONSIVE                             */
/* ========================================= */
@media (max-width: 768px) {
    .price-grid { grid-template-columns: 1fr; }
    .price-card.highlight { transform: none; }
}

@media (max-width: 600px) {
    .brand-name { font-size: 1.5rem; }
    .content-box { padding: 25px 20px; }
    .nav-bar a { font-size: .7rem; margin: 0 4px; }
}
/* ========================================= */
/* CHECK LIST (CENTANG)                      */
/* ========================================= */
.check-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.check-list li {
    position: relative;
    padding-left: 36px;
    margin-bottom: 14px;
    font-size: 1rem;
    color: #334155;
    line-height: 1.5;
}

.check-list li::before {
    content: "✔";
    position: absolute;
    left: 0;
    top: 2px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-teal);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================= */
/* FAQ STYLE                                 */
/* ========================================= */
.faq-item {
    padding: 18px 20px;
    border: 1px solid #e2e8f0;
    border-left: 5px solid var(--primary-teal);
    border-radius: 8px;
    margin-bottom: 15px;
    background: #ffffff;
}

.faq-q {
    display: block;
    font-weight: 700;
    color: var(--dark-teal);
    margin-bottom: 6px;
}

.faq-a {
    display: block;
    color: #475569;
    font-size: 0.95rem;
    line-height: 1.5;
}
/* ========================================= */
/* PROBLEM LIST (ICON SILANG)                */
/* ========================================= */
.problem-list {
    list-style: none;
    padding: 0;
    margin: 20px 0 0;
}

.problem-list li {
    position: relative;
    padding-left: 36px;
    margin-bottom: 14px;
    font-size: 1rem;
    color: #334155;
    line-height: 1.5;
}

.problem-list li::before {
    content: "✖";
    position: absolute;
    left: 0;
    top: 2px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #ef4444;
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* FAQ ACCORDION */
.faq-item {
    border: 1px solid #cbd5e1;
    border-top: 3px solid var(--primary-teal);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    background: #fff;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 15px 20px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark-teal);
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:hover {
    background: #f0fdfa;
}

.faq-icon {
    font-size: 1.3rem;
    transition: transform .2s ease;
}

.faq-answer {
    display: none;
    padding: 0 20px 20px;
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}