@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #6E56FF;
    --primary-hover: #5A47D4;
    --bg-color: #F3F4F6;
    --card-bg: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --error-color: #EF4444;
    --success-color: #10B981;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.auth-container {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 440px;
    text-align: center;
}

.auth-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 2rem;
}

.auth-logo {
    width: 32px;
    height: 32px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.input-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s;
    outline: none;
}

.input-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(110, 86, 255, 0.1);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 40px;
    padding: 0.875rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 0.5rem;
    font-family: 'Inter', sans-serif;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.auth-footer {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

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

.error-message {
    color: var(--error-color);
    background-color: rgba(239, 68, 68, 0.1);
    padding: 0.75rem;
    border-radius: 8px;
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    display: none;
}

.success-message {
    color: var(--success-color);
    background-color: rgba(16, 185, 129, 0.1);
    padding: 0.75rem;
    border-radius: 8px;
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    display: none;
}

.dashboard-container {
    max-width: 600px;
    text-align: left;
}

.dashboard-header {
    justify-content: space-between;
}

.header-title-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-logout {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    margin: 0;
    background: var(--error-color);
}

.btn-logout:hover {
    background: #DC2626;
}

.btn-full {
    width: 100%;
}

.qr-container {
    display: none;
    text-align: center;
    margin-top: 1rem;
    padding: 1rem;
    background: #fff;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.section-title {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.mt-2 {
    margin-top: 2rem;
}

.device-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: 2rem 0;
}

.device-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.device-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.device-icon {
    font-size: 2rem;
}

.device-info {
    flex-grow: 1;
}

.device-name {
    font-weight: 600;
    color: var(--text-primary);
}

.device-status {
    font-size: 0.75rem;
    color: var(--success-color);
}

.qr-text {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.device-card.drag-active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(110, 86, 255, 0.2);
    transform: scale(1.02);
}

.device-actions {
    display: none;
    margin-top: 12px;
}

.device-card:hover .device-actions,
.device-card.drag-active .device-actions {
    display: block;
}

.btn-small {
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    margin-top: 0;
}

.progress-container {
    width: 100%;
    background: #E5E7EB;
    height: 6px;
    border-radius: 3px;
    margin-top: 8px;
    overflow: hidden;
    display: none;
}

.progress-fill {
    background: var(--primary-color);
    height: 100%;
    width: 0%;
    transition: width 0.1s linear;
}

/* App Layout: Split Pane */
.app-layout {
    display: flex;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-color);
}

.sidebar {
    width: 320px;
    min-width: 320px;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.workspace {
    flex-grow: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    position: relative;
}

.workspace-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

.file-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.file-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border-color: var(--primary-color);
}

.file-item.preview-card {
    grid-column: span 2;
    cursor: default;
}

.file-item.preview-card:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border-color);
}

.badge {
    position: absolute;
    top: -8px;
    right: -8px;
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.65rem;
    font-weight: 700;
}

/* Transfer Animation */
.transfer-anim-layer {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    padding: 1rem 2rem;
    border-radius: 40px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    border: 2px solid var(--primary-color);
}

.transfer-track {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.t-device {
    font-size: 2rem;
}

.t-particles {
    display: flex;
    gap: 4px;
    width: 60px;
    justify-content: space-between;
    position: relative;
}

.particle {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: flowAnim 0.8s infinite linear;
}

.particle:nth-child(2) {
    animation-delay: 0.2s;
}

.particle:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes flowAnim {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }

    50% {
        transform: scale(1.2);
        opacity: 1;
    }

    100% {
        transform: scale(0.5);
        opacity: 0;
    }
}

.t-status {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .app-layout {
        flex-direction: column;
        overflow-y: auto;
    }

    .sidebar {
        width: 100%;
        min-width: unset;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
        flex: none;
    }

    .workspace {
        padding: 1rem;
        overflow-y: visible;
    }

    .workspace-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .folder-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 1rem;
    }

    .file-item.preview-card {
        grid-column: span 1;
    }
}