:root {
    --bg-color: #000000;
    --card-bg: #121212;
    --text-color: #ffffff;
    --accent-color: #ff007f;
    /* Neon Pink */
    --accent-glow: rgba(255, 0, 127, 0.4);
    --secondary-text: #b0b0b0;
    --input-bg: #1e1e1e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 20px;
    padding-bottom: 20px;
    /* Massive space for bottom nav */
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo span {
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-glow);
}

.balance-badge {
    background: var(--card-bg);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--accent-color);
    font-weight: 600;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Main Content Area */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Home / Generate Tab */
.upload-area {
    background: var(--card-bg);
    border: 2px dashed var(--accent-color);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 20px;
}

.upload-area:hover,
.upload-area.drag-over {
    background: rgba(255, 0, 127, 0.1);
    box-shadow: 0 0 20px var(--accent-glow);
}

.upload-icon {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.upload-text {
    color: var(--secondary-text);
    font-size: 14px;
}

/* Result Area */
.result-area {
    margin-top: 20px;
    margin-bottom: 100px;
    /* Extra space for buttons */
    display: none;
}

.result-image {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

.btn {
    width: 100%;
    padding: 16px;
    border-radius: 12px;
    border: none;
    background: var(--accent-color);
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 15px;
    box-shadow: 0 0 15px var(--accent-glow);
    transition: transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--card-bg);
    border: 1px solid #333;
    box-shadow: none;
}

/* Store */
.packages-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.package-card {
    background: var(--card-bg);
    border: 1px solid #333;
    border-radius: 16px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.package-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-2px);
}

.package-info {
    z-index: 2;
}

.package-info h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--text-color);
}

.package-info span {
    font-size: 12px;
    color: var(--secondary-text);
}

.package-btn {
    background: linear-gradient(45deg, var(--accent-color), #ff4da6);
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 700;
    color: white;
    box-shadow: 0 4px 10px var(--accent-glow);
    font-size: 14px;
    z-index: 2;
}

/* Navigation - Bottom Bar */
.bottom-nav {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 460px;
    background: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    display: flex;
    padding: 10px;
    border: 1px solid #333;
    z-index: 100;
}

.nav-item {
    flex: 1;
    text-align: center;
    padding: 10px;
    color: var(--secondary-text);
    cursor: pointer;
    transition: color 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 12px;
    gap: 4px;
}

.nav-item.active {
    color: var(--accent-color);
}

.nav-item svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

/* Profile Tab */
.profile-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 20px;
    border: 1px solid #333;
}

.profile-stat {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #333;
}

.profile-stat:last-child {
    border-bottom: none;
}

/* Loader */
.loader {
    width: 48px;
    height: 48px;
    border: 5px solid var(--text-color);
    border-bottom-color: var(--accent-color);
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
    margin: 20px auto;
}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 16px;
    z-index: 10;
}