:root {
    --primary-dark: #2d2d2d; 
    --primary-grey: #404040;
    --primary-light: #ffffff;
    --accent-blue: #3b82f6;
    --danger: #ef4444;
    --text-grey: #9ca3af;
    --chat-bg: #1e1e1e;
    --chat-user: #3b82f6;
    --chat-bot: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background: #111; 
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-light);
    overflow-x: hidden;
    position: relative;
}

.bg-animation {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    background: linear-gradient(to bottom, #1a1a1a, #000000);
}

.floating-item {
    position: absolute;
    bottom: -100px;
    color: rgba(255, 255, 255, 0.03);
    font-size: 4rem;
    animation: floatUp linear infinite;
}

.floating-item:nth-child(1) { left: 10%; animation-duration: 15s; font-size: 5rem; animation-delay: 0s; }
.floating-item:nth-child(2) { left: 25%; animation-duration: 20s; font-size: 3rem; animation-delay: 5s; }
.floating-item:nth-child(3) { left: 40%; animation-duration: 18s; font-size: 6rem; animation-delay: 2s; }
.floating-item:nth-child(4) { left: 60%; animation-duration: 22s; font-size: 4rem; animation-delay: 8s; }
.floating-item:nth-child(5) { left: 75%; animation-duration: 17s; font-size: 5.5rem; animation-delay: 3s; }
.floating-item:nth-child(6) { left: 90%; animation-duration: 25s; font-size: 3.5rem; animation-delay: 10s; }

@keyframes floatUp {
    0% { transform: translateY(0) rotate(0deg) scale(0.8); opacity: 0; }
    20% { opacity: 0.1; }
    80% { opacity: 0.1; }
    100% { transform: translateY(-120vh) rotate(360deg) scale(1.2); opacity: 0; }
}

.app-container {
    width: 100%;
    max-width: 420px;
    min-height: 100vh;
    padding: 20px;
    position: relative;
    z-index: 10;
    background: rgba(40, 40, 40, 0.25);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 50px rgba(0,0,0,0.6);
}

.top-bar {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-bottom: 30px;
    margin-top: 10px;
    position: relative;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.95);
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    color: #1a1a1a;
    font-size: 1.2rem;
    transition: transform 0.2s ease, background-color 0.2s;
    z-index: 10;
}

.icon-btn:active { transform: scale(0.92); background-color: #f0f0f0; }

.notification-badge {
    position: absolute;
    top: -5px; right: -5px;
    background-color: var(--danger);
    color: white;
    font-size: 10px;
    width: 18px; height: 18px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    border: 2px solid white;
}

.notif-dropdown {
    position: absolute;
    top: 60px; right: 0;
    width: 300px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    padding: 20px;
    z-index: 99;
    color: #333;
    transform-origin: top right;
    transform: scale(0);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
    max-height: 400px;
    overflow-y: auto;
}

.notif-dropdown.active { transform: scale(1); opacity: 1; pointer-events: auto; }

.notif-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 15px; border-bottom: 1px solid #eee; padding-bottom: 10px;
    position: sticky; top: 0; background: white; z-index: 2;
}
.notif-header h4 { font-size: 16px; font-weight: 700; }
.notif-header .clear-all { font-size: 12px; color: var(--danger); cursor: pointer; font-weight: 600; }

.notif-item { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; border-bottom: 1px solid #f5f5f5; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }
.notif-item:last-child { border-bottom: none; }
.notif-icon {
    background: #f1f5f9; width: 32px; height: 32px;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    color: var(--text-grey); font-size: 14px; flex-shrink: 0;
}
.notif-content p { font-size: 13px; font-weight: 500; color: #334155; line-height: 1.4; margin-bottom: 2px; }
.notif-content span { font-size: 11px; color: #94a3b8; }
.empty-state { text-align: center; color: #999; font-size: 12px; padding: 20px 0; }

.profile-section { text-align: center; margin-bottom: 40px; }
.avatar-container { position: relative; display: inline-block; margin-bottom: 10px; }
.avatar { width: 110px; height: 110px; border-radius: 50%; border: 4px solid rgba(255,255,255,0.8); object-fit: cover; box-shadow: 0 8px 20px rgba(0,0,0,0.5); }
.verified-badge { position: absolute; bottom: 5px; right: 5px; background: var(--accent-blue); color: white; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; border: 2px solid white; font-size: 12px; }
.username { font-size: 28px; font-weight: 700; margin-bottom: 2px; letter-spacing: 0.5px; text-shadow: 0 2px 4px rgba(0,0,0,0.5); }
.handle { font-size: 16px; color: #e5e7eb; font-weight: 500; display: flex; align-items: center; justify-content: center; gap: 5px; margin-bottom: 15px; }
.handle i { color: var(--accent-blue); }
.description { font-size: 14px; color: #d1d5db; font-style: italic; margin: 0 auto; max-width: 90%; line-height: 1.5; opacity: 0.95; font-weight: 300; }

.payment-methods { display: flex; flex-direction: column; gap: 15px; }

.pay-btn {
    background: #ffffff; 
    color: #1a1a1a;
    border: none;
    padding: 18px;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 600;
    display: flex; align-items: center; justify-content: center; gap: 12px;
    cursor: pointer;
    box-shadow: 0 6px 15px rgba(0,0,0,0.3);
    position: relative; overflow: hidden;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s;
}

.pay-btn i { font-size: 20px; color: #2d2d2d; }

.pay-btn:hover { box-shadow: 0 8px 20px rgba(255,255,255,0.15); background: #f2f2f2; }
.pay-btn:active { transform: scale(0.97); }

.ripple {
    position: absolute; background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    transform: scale(0); animation: rippleAnim 0.6s linear; pointer-events: none;
}
@keyframes rippleAnim { to { transform: scale(4); opacity: 0; } }

.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.85); backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; padding: 20px;
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-box {
    background: #ffffff; color: #333; width: 100%; max-width: 380px;
    border-radius: 24px; padding: 25px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    transform: translateY(30px) scale(0.95); opacity: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal-overlay.active .modal-box { transform: translateY(0) scale(1); opacity: 1; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; }
.modal-header h3 { font-size: 1.25rem; font-weight: 700; color: #111; text-transform: uppercase; }
.close-icon { font-size: 1.5rem; color: #666; cursor: pointer; padding: 5px; transition: color 0.3s; }
.close-icon:hover { color: #000; }

.payment-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 0;
}

.payment-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px; background: #f3f4f6; border-radius: 16px; border: 1px solid #e5e7eb;
}
.pay-info-text .pay-name { font-weight: 700; font-size: 1rem; color: #111; margin-bottom: 2px; }
.pay-info-text .pay-number { font-size: 0.9rem; color: #555; font-family: 'Poppins', monospace; }

.copy-btn-dark {
    background: #2d2d2d; color: white; border: none; width: 42px; height: 42px;
    border-radius: 12px; display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 1.2rem; transition: transform 0.2s, background 0.2s;
    position: relative; overflow: hidden;
}
.copy-btn-dark:active { transform: scale(0.9); background: #1a1a1a; }
.selesai-btn { 
    width: 100%; padding: 15px; font-size: 1.1rem; background: #2d2d2d; color: white;
    border: none; border-radius: 12px; cursor: pointer; font-weight: 600; 
    box-shadow: 0 4px 10px rgba(0,0,0,0.2); transition: background 0.2s;
}
.selesai-btn:hover { background: #1a1a1a; }
.selesai-btn:active { transform: scale(0.98); }
.qr-container { width: 100%; display: flex; justify-content: center; margin-bottom: 20px; }
.qr-image { width: 100%; max-width: 250px; height: auto; border-radius: 15px; border: 2px solid #eee; }
.hidden-section { display: none; }

.download-btn {
    background: #10b981;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    display: flex; align-items: center; justify-content: center; gap: 8px;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    position: relative; overflow: hidden;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s;
    margin: 0 auto;
}
.download-btn i { font-size: 16px; }
.download-btn:hover { box-shadow: 0 6px 15px rgba(16, 185, 129, 0.3); background: #059669; }
.download-btn:active { transform: scale(0.97); }

.chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.chat-bubble {
    width: 60px;
    height: 60px;
    background: var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(0,0,0,0.4);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    color: white;
    font-size: 28px;
    border: 2px solid rgba(255,255,255,0.2);
}

.chat-bubble:hover { transform: scale(1.1); }
.chat-bubble:active { transform: scale(0.9); }

.chat-window {
    width: 340px;
    height: 500px;
    background: var(--chat-bg);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    border: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform-origin: bottom right;
    transform: scale(0);
    opacity: 0;
    transition: all 0.3s ease;
    position: absolute;
    bottom: 70px;
    right: 0;
    pointer-events: none;
}

.chat-window.active {
    transform: scale(1);
    opacity: 1;
    pointer-events: auto;
}

.chat-header {
    background: #252525;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
}

.chat-header-info { display: flex; align-items: center; gap: 10px; }
.chat-header-info i { font-size: 20px; color: var(--accent-blue); }
.chat-title { font-size: 16px; font-weight: 600; color: white; }
.chat-close { cursor: pointer; color: #999; font-size: 20px; }
.chat-close:hover { color: white; }

.chat-body {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: #1e1e1e;
}

.message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.5;
    word-wrap: break-word;
}

.message.bot {
    align-self: flex-start;
    background: var(--chat-bot);
    color: #e5e5e5;
    border-bottom-left-radius: 2px;
}

.message.user {
    align-self: flex-end;
    background: var(--chat-user);
    color: white;
    border-bottom-right-radius: 2px;
}

.chat-options-area {
    padding: 15px;
    background: #252525;
    border-top: 1px solid #333;
    display: flex;
    flex-direction: column;
        gap: 8px;
}

.options-label {
    font-size: 11px;
    color: #888;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.option-chips-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: 100%;
}

.option-chip {
    background: #333;
    color: white;
    border: 1px solid #444;
    padding: 10px 5px;
    border-radius: 20px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
}

.option-chip:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.option-chip:active { transform: scale(0.95); }

.typing-indicator {
    display: none;
    align-self: flex-start;
    background: var(--chat-bot);
    padding: 10px 14px;
    border-radius: 12px;
    border-bottom-left-radius: 2px;
    gap: 4px;
}
.typing-dot {
    width: 6px; height: 6px; background: #999; border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
}
.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
@keyframes typing { 0%, 80%, 100% { transform: scale(0); } 40% { transform: scale(1); } }

@media (min-width: 480px) {
    .app-container { border-radius: 30px; min-height: auto; height: 800px; overflow-y: auto; }
    .chat-widget { right: 30px; bottom: 30px; }
}
@media (max-width: 400px) {
    .chat-window { width: 300px; height: 450px; bottom: 65px; }
}