/* Reset & Base Styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: #F4F6F9;
    color: #1A202C;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 0;
    font-weight: 700; /* Ensure strong bold readable font */
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* App Container (Mobile viewport emulation on desktop) */
.app-container {
    width: 100%;
    max-width: 480px;
    background-color: #F5F7FA;
    min-height: 100vh;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    padding-bottom: 40px;
}

/* Orange Header Section */
.header-section {
    background: linear-gradient(180deg, #FF6A00 0%, #FF8500 100%);
    padding: 32px 20px 48px 20px;
    text-align: center;
    border-bottom-left-radius: 36px;
    border-bottom-right-radius: 36px;
    position: relative;
    color: #FFFFFF;
}

.main-title {
    font-size: 1.55rem;
    font-weight: 800;
    color: #0E1726; /* Dark navy accent title as in original image */
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.sub-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: #0E1726;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 14px;
}

/* Price Badge */
.price-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #0E1726;
    font-size: 1rem;
    font-weight: 800;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 24px;
}

/* Base Card Styling */
.card {
    background: #FFFFFF;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border: 1.5px solid #E2E8F0;
    margin-bottom: 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Promo Card inside Header */
.promo-card {
    background: #FFFFFF;
    color: #1A202C;
    margin-top: 10px;
    margin-bottom: 0;
    border-radius: 22px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border: 2px solid rgba(255, 255, 255, 0.8);
    text-align: center;
}

.promo-header {
    font-size: 1.1rem;
    font-weight: 800;
    color: #2D3748;
    letter-spacing: 0.05em;
    margin-bottom: 14px;
}

.promo-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: left;
}

.promo-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #2D3748;
}

.check-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* Content Section below header */
.content-section {
    padding: 24px 20px 0 20px;
    margin-top: -15px;
}

/* Instruction Card */
.instruction-card {
    text-align: center;
    border-color: #FFAE66; /* Light orange border accent */
}

.instruction-text {
    font-size: 0.98rem;
    font-weight: 700;
    color: #2D3748;
    margin-bottom: 18px;
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 24px;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 800;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
}

.btn-primary {
    background-color: #1A2634; /* Dark Navy as in Image 1 */
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: #0F172A;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.25);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-whatsapp {
    background-color: #25D366;
    color: #FFFFFF;
    text-transform: none;
    margin-top: 14px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.btn-whatsapp:hover {
    background-color: #20BA5A;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.3);
}

/* QRIS Card */
.qris-card {
    padding: 12px;
    background: #FFFFFF;
    border-radius: 24px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid #E2E8F0;
    overflow: hidden;
}

.qris-image-wrapper {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    background-color: #FFFFFF;
    display: flex;
    justify-content: center;
    align-items: center;
}

.qris-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    border-radius: 16px;
}

/* Footer Instructions */
.footer-instructions {
    text-align: center;
    padding: 12px 10px;
}

.inst-line {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.bold-text {
    font-weight: 800;
    color: #2D3748;
}

.text-muted {
    font-weight: 700;
    color: #718096;
    font-size: 0.9rem;
    line-height: 1.5;
}

.thank-you-text {
    font-size: 1.1rem;
    font-weight: 800;
    color: #1A202C;
    margin-top: 12px;
}

/* Responsive tweaks for very small screens */
@media (max-width: 360px) {
    .main-title {
        font-size: 1.35rem;
    }
    .sub-title {
        font-size: 1rem;
    }
    .btn {
        padding: 12px 18px;
        font-size: 0.9rem;
    }
}