:root {
    --bg-color: #0d0d15;
    --card-bg-color: #131322;
    --primary-text-color: #f1f1f6;
    --secondary-text-color: #8e8ea8;
    --border-color: #21213a;
    --accent-gradient: linear-gradient(135deg, #6366f1, #db2777);
    --success-color: #10b981;
    --error-color: #ef4444;
    --font-family: 'Poppins', sans-serif;
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--primary-text-color);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 60px 20px;
    background-image: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
                      radial-gradient(circle at 80% 90%, rgba(219, 39, 119, 0.12) 0%, transparent 50%);
}

.container {
    width: 100%;
    max-width: 720px;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

header h1 a {
    text-decoration: none;
    color: inherit;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

header p {
    color: var(--secondary-text-color);
    font-size: 1.1rem;
}

/* TOMBOL BACK RESPONSIVE */
.header-navigation {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 25px;
    width: 100%;
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-text-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    background: var(--card-bg-color);
    border: 1px solid var(--border-color);
    padding: 8px 18px;
    border-radius: 8px;
}

.back-button:hover {
    color: var(--primary-text-color);
    border-color: #6366f1;
    transform: translateX(-4px);
}

.step-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
    animation: slideUp 0.6s ease-out forwards;
    opacity: 0;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-card:hover {
    box-shadow: 0 0 25px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.step-card h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-text-color);
}

.step-number {
    background: var(--accent-gradient);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: 600;
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.drop-zone.drag-over {
    background-color: rgba(99, 102, 241, 0.05);
    border-color: #6366f1;
}

.drop-zone-prompt i {
    font-size: 3rem;
    color: #6366f1;
    margin-bottom: 15px;
}

.drop-zone-prompt p {
    color: var(--secondary-text-color);
    font-size: 1rem;
    margin-bottom: 5px;
}

.drop-zone-prompt .small-text {
    font-size: 0.8rem;
    margin-bottom: 15px;
}

.browse-button {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--primary-text-color);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-family);
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.browse-button:hover {
    background-color: #6366f1;
    color: white;
    border-color: #6366f1;
}

#file-list-container {
    margin-top: 20px;
}

#file-list-container h3 {
    margin-bottom: 10px;
    font-weight: 400;
    color: var(--secondary-text-color);
}

#file-list {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}

#file-list li {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 10px 15px;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 400;
    color: var(--secondary-text-color);
}

input[type="text"], select {
    width: 100%;
    padding: 12px 15px;
    background-color: #09090f;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--primary-text-color);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus, select:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.url-preview {
    background-color: #09090f;
    padding: 15px;
    border-radius: 6px;
    margin-top: 20px;
    text-align: center;
}
.url-preview h4 {
    color: var(--secondary-text-color);
    font-weight: 400;
    margin-bottom: 8px;
}
.url-preview p {
    font-weight: 600;
    font-size: 1.1rem;
    word-break: break-all;
    color: var(--success-color);
}

.deploy-button {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 8px;
    background: var(--accent-gradient);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.deploy-button:disabled {
    background: var(--border-color);
    color: var(--secondary-text-color);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.deploy-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(219, 39, 119, 0.2);
}

.deploy-button .loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid #fff;
    border-bottom-color: transparent;
    border-radius: 50%;
    animation: rotation 1s linear infinite;
}

.deploy-button.loading .button-text {
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
}

.deploy-button.loading .loader {
    display: block;
    position: absolute;
}

#status-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    display: none;
}

#status-message.info {
    background-color: rgba(99, 102, 241, 0.08);
    color: #a5b4fc;
    border: 1px solid rgba(99, 102, 241, 0.2);
    display: block;
}

#status-message.success {
    background-color: rgba(16, 185, 129, 0.08);
    color: var(--success-color);
    border: 1px solid var(--success-color);
    display: block;
}

#status-message.error {
    background-color: rgba(239, 68, 68, 0.08);
    color: var(--error-color);
    border: 1px solid var(--error-color);
    display: block;
}

#status-message a {
    color: var(--success-color);
    font-weight: 700;
    text-decoration: underline;
}

/* PERBAIKAN FOOTER: CENTER ALIGNMENT & SQUASH-FREE */
footer {
    width: 100%;
    text-align: center;
    margin: 50px auto 0 auto;
    padding: 20px 0;
    color: var(--secondary-text-color);
    font-size: 0.9rem;
    display: block;
    clear: both;
}

@keyframes rotation {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* GLOBAL MUSIC CONTROLLER */
#music-control {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
}
#music-control:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
}
#music-control svg {
    width: 20px;
    height: 20px;
    color: var(--primary-text-color);
}

/* CUSTOM TOAST SYSTEM */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast-message {
    background: var(--card-bg-color);
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    color: var(--primary-text-color);
    font-size: 0.9rem;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast-message.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast-message.success i { color: var(--success-color); }
.toast-message.error i { color: var(--error-color); }
.toast-message.info i { color: #6366f1; }

/* SKELETON ROW FOR DASHBOARD TABLE */
.skeleton-row td {
    padding: 15px !important;
}

.skeleton-cell {
    height: 20px;
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: loading-skeleton 1.5s infinite;
    border-radius: 4px;
}

.skeleton-cell.shorter { width: 40%; }
.skeleton-cell.medium { width: 70%; }
.skeleton-cell.longer { width: 90%; }

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

/* RESPONSIVE LAYOUT BREAKPOINTS AUDIT */
@media (max-width: 992px) {
    body { padding: 40px 15px; }
    .container { max-width: 100%; }
}

@media (max-width: 768px) {
    header h1 { font-size: 2rem; }
    .step-card { padding: 20px; }
    .drop-zone { padding: 25px 15px; }
    .back-button { padding: 6px 14px; font-size: 0.85rem; }
}

@media (max-width: 480px) {
    header h1 { font-size: 1.7rem; }
    .step-card h2 { font-size: 1.2rem; }
    .deploy-button { font-size: 1rem; padding: 12px; }
}