/* ============================================
   APK Rename Tools - Elegant Blue Theme
   Author: Shinzii Web ID
   ============================================ */

/* ----- Google Fonts ----- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ----- CSS Variables ----- */
:root {
    --primary-900: #0a1628;
    --primary-800: #0f1f3d;
    --primary-700: #132a52;
    --primary-600: #1a3a6b;
    --primary-500: #1e4d8c;
    --primary-400: #2a6cb5;
    --primary-300: #4a8fd4;
    --primary-200: #7db3e8;
    --primary-100: #b0d4f5;
    --primary-50: #d8ebfa;
    --primary-10: #f0f7fe;

    --accent-400: #00b4d8;
    --accent-300: #48cae4;
    --accent-200: #90e0ef;
    --accent-100: #caf0f8;

    --surface-dark: #0d1b2a;
    --surface-mid: #1b2d44;
    --surface-light: #243b55;
    --surface-card: rgba(255, 255, 255, 0.05);
    --surface-card-hover: rgba(255, 255, 255, 0.08);

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(42, 108, 181, 0.3);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ----- Reset & Base ----- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--surface-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ----- Animated Background ----- */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(26, 58, 107, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(42, 108, 181, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(0, 180, 216, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(2px 2px at 20px 30px, rgba(255, 255, 255, 0.1), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255, 255, 255, 0.08), transparent),
        radial-gradient(2px 2px at 50px 160px, rgba(255, 255, 255, 0.06), transparent),
        radial-gradient(2px 2px at 90px 40px, rgba(255, 255, 255, 0.1), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(255, 255, 255, 0.08), transparent),
        radial-gradient(2px 2px at 160px 30px, rgba(255, 255, 255, 0.06), transparent);
    background-size: 200px 200px;
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}

/* ----- Container ----- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ----- Header / Navbar ----- */
.navbar {
    padding: 20px 0;
    position: relative;
    z-index: 10;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.4rem;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-400), var(--accent-400));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 4px 15px rgba(42, 108, 181, 0.4);
}

.logo span {
    background: linear-gradient(135deg, var(--primary-200), var(--accent-300));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-400), var(--accent-400));
    transition: var(--transition);
    border-radius: 2px;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a.active::after {
    width: 100%;
}

/* ----- Hero Section ----- */
.hero {
    padding: 60px 0 40px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(42, 108, 181, 0.15);
    border: 1px solid rgba(42, 108, 181, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary-200);
    margin-bottom: 24px;
    transition: var(--transition);
}

.hero-badge:hover {
    background: rgba(42, 108, 181, 0.25);
    border-color: rgba(42, 108, 181, 0.5);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-200) 50%, var(--accent-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

/* ----- Tool Card ----- */
.tool-card {
    background: var(--surface-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 48px;
    margin: 0 auto 40px;
    max-width: 800px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-400), var(--accent-400), transparent);
    opacity: 0.6;
}

.tool-card:hover {
    background: var(--surface-card-hover);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.tool-card-header {
    text-align: center;
    margin-bottom: 36px;
}

.tool-card-header .icon-box {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(42, 108, 181, 0.3), rgba(0, 180, 216, 0.2));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 16px;
    border: 1px solid rgba(42, 108, 181, 0.3);
}

.tool-card-header h2 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.tool-card-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ----- Form Styles ----- */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
    letter-spacing: 0.3px;
}

.form-group label .required {
    color: #ef4444;
    margin-left: 2px;
}

/* File Upload */
.file-upload {
    position: relative;
    border: 2px dashed rgba(42, 108, 181, 0.4);
    border-radius: var(--radius-md);
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(42, 108, 181, 0.05);
}

.file-upload:hover {
    border-color: var(--primary-400);
    background: rgba(42, 108, 181, 0.1);
}

.file-upload.dragover {
    border-color: var(--accent-400);
    background: rgba(0, 180, 216, 0.1);
    transform: scale(1.01);
}

.file-upload input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    cursor: pointer;
}

.file-upload-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    display: block;
    color: var(--primary-300);
}

.file-upload-text {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.file-upload-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.file-upload .file-name {
    display: none;
    margin-top: 12px;
    padding: 8px 16px;
    background: rgba(42, 108, 181, 0.15);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--primary-200);
    word-break: break-all;
}

.file-upload.has-file .file-name {
    display: inline-block;
}

.file-upload.has-file .file-upload-icon,
.file-upload.has-file .file-upload-text,
.file-upload.has-file .file-upload-hint {
    display: none;
}

/* Input Fields */
.form-input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    outline: none;
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.form-input:focus {
    border-color: var(--primary-400);
    background: rgba(42, 108, 181, 0.1);
    box-shadow: 0 0 0 3px rgba(42, 108, 181, 0.15);
}

.form-input.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Select */
.form-select {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='rgba(255,255,255,0.5)' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
}

.form-select:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.form-select:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(42, 108, 181, 0.15);
}

.form-select option {
    background: var(--surface-mid);
    color: var(--text-primary);
}

/* Input Group */
.input-group {
    display: flex;
    gap: 12px;
}

.input-group .form-input {
    flex: 1;
}

/* Checkbox / Toggle */
.toggle-group {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
}

.toggle {
    position: relative;
    width: 48px;
    height: 28px;
    flex-shrink: 0;
}

.toggle input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 28px;
    transition: var(--transition);
}

.toggle .slider::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
}

.toggle input:checked + .slider {
    background: linear-gradient(135deg, var(--primary-400), var(--accent-400));
}

.toggle input:checked + .slider::before {
    transform: translateX(20px);
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-400));
    color: white;
    box-shadow: 0 4px 20px rgba(42, 108, 181, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(42, 108, 181, 0.5);
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-success {
    background: linear-gradient(135deg, #059669, #10b981);
    color: white;
    box-shadow: 0 4px 20px rgba(5, 150, 105, 0.4);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(5, 150, 105, 0.5);
}

.btn-danger {
    background: linear-gradient(135deg, #dc2626, #ef4444);
    color: white;
    box-shadow: 0 4px 20px rgba(220, 38, 38, 0.4);
}

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ----- Options Grid ----- */
.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 640px) {
    .options-grid {
        grid-template-columns: 1fr;
    }
}

.option-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.option-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.1);
}

.option-card.selected {
    background: rgba(42, 108, 181, 0.15);
    border-color: var(--primary-400);
}

.option-card-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.option-card-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ----- Progress Bar ----- */
.progress-container {
    display: none;
    margin: 24px 0;
}

.progress-container.active {
    display: block;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-400), var(--accent-400));
    border-radius: 6px;
    transition: width 0.5s ease;
    width: 0%;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ----- Result Section ----- */
.result-section {
    display: none;
    margin-top: 28px;
    padding: 24px;
    background: rgba(5, 150, 105, 0.1);
    border: 1px solid rgba(5, 150, 105, 0.2);
    border-radius: var(--radius-md);
}

.result-section.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
}

.result-section.active {
    display: block;
}

.result-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.result-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.result-details {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin: 16px 0;
    font-size: 0.9rem;
}

.result-details div {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.result-details div:last-child {
    border-bottom: none;
}

.result-details .label {
    color: var(--text-muted);
}

.result-details .value {
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
}

/* Download Button */
.download-btn-wrap {
    text-align: center;
    margin-top: 20px;
}

/* ----- Features Section ----- */
.features {
    padding: 40px 0 80px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-item {
    background: var(--surface-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: var(--transition);
    text-align: center;
}

.feature-item:hover {
    background: var(--surface-card-hover);
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

.feature-item h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ----- Footer ----- */
.footer {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer a {
    color: var(--primary-200);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* ----- Notifications / Toast ----- */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    background: var(--surface-mid);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
    font-size: 0.9rem;
    max-width: 400px;
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast-success {
    border-color: rgba(5, 150, 105, 0.3);
    background: rgba(5, 150, 105, 0.15);
}

.toast-error {
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.15);
}

.toast-info {
    border-color: rgba(42, 108, 181, 0.3);
    background: rgba(42, 108, 181, 0.15);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ----- Responsive ----- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .tool-card {
        padding: 28px 20px;
    }

    .tool-card-header h2 {
        font-size: 1.3rem;
    }

    .input-group {
        flex-direction: column;
    }

    .navbar .container {
        flex-direction: column;
        gap: 16px;
    }

    .nav-links {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .tool-card {
        padding: 20px 16px;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 0.95rem;
    }
}

/* ----- Smooth Loading ----- */
.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.06) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ----- Scrollbar ----- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--surface-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-600);
}