/* ===================================================
   ATDataroom — Design System
   Matching AmbroschTech website branding
   =================================================== */

:root {
    --bg-color: #ffffff;
    --surface-color: #f7f9fc;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-color: #1e3a8a;
    --accent-hover: #1e40af;
    --accent-light: rgba(30, 58, 138, 0.08);
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --danger-hover: #b91c1c;
    --font-heading: 'Chakra Petch', sans-serif;
    --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', monospace;
    --transition-speed: 0.3s;
    --container-width: 900px;
    --radius: 6px;
}

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

html,
body {
    max-width: 100%;
    overflow-x: hidden;
    min-height: 100vh;
}

body {
    background-color: var(--bg-color);
    background-image:
        linear-gradient(rgba(30, 58, 138, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 58, 138, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.7;
    display: flex;
    flex-direction: column;
}

/* --- Layout --- */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 0 4rem;
}

#files-screen {
    align-items: flex-start;
    padding-top: 7rem;
}

/* --- Typography --- */

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    position: relative;
}

p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* --- Navigation --- */

.nav-bar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--accent-color);
    z-index: 100;
    padding: 1rem 0;
}

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

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.logo:hover {
    color: var(--accent-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.customer-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-color);
    font-family: var(--font-mono);
}

/* --- Buttons --- */

.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    border-radius: var(--radius);
    transition: background-color var(--transition-speed), transform 0.15s;
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

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

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-outline:hover {
    background-color: var(--accent-color);
    color: white;
}

.btn-small {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
}

.btn-full {
    width: 100%;
}

.btn-danger {
    background-color: transparent;
    color: var(--danger-color);
    border: none;
    padding: 0.3rem 0.6rem;
}

.btn-danger:hover {
    background-color: rgba(220, 38, 38, 0.08);
    transform: none;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: color var(--transition-speed), background var(--transition-speed);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    color: var(--accent-color);
    background: var(--accent-light);
}

.btn-icon.danger:hover {
    color: var(--danger-color);
    background: rgba(220, 38, 38, 0.08);
}

/* --- Login Card --- */

.login-card {
    width: 100%;
    max-width: 420px;
    background: white;
    padding: 3.5rem 3rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
    text-align: center;
}

.login-icon {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.login-subtitle {
    font-size: 0.95rem;
    margin-bottom: 2.5rem;
}

.login-card .form-group {
    text-align: left;
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.form-group input {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text-primary);
    background-color: #fff;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group input::placeholder {
    color: #94a3b8;
}

.error-text {
    color: var(--danger-color) !important;
    font-size: 0.85rem;
    margin-top: 1rem;
    min-height: 1.2em;
}

/* --- Files Header --- */

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

.files-subtitle {
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* --- Drop Zone --- */

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    text-align: center;
    margin-bottom: 2rem;
    transition: border-color var(--transition-speed), background var(--transition-speed);
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
}

.drop-zone-content svg {
    color: var(--accent-color);
    opacity: 0.6;
}

.drop-zone:hover .drop-zone-content svg,
.drop-zone.drag-over .drop-zone-content svg {
    opacity: 1;
}

.file-label {
    color: var(--accent-color);
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.file-label:hover {
    color: var(--accent-hover);
}

/* --- Upload Progress --- */

.upload-progress {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.progress-bar {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
    border-radius: 3px;
    transition: width 0.2s ease;
}

/* --- File List --- */

.file-list-container {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 200px;
}

.file-table {
    width: 100%;
    border-collapse: collapse;
}

.file-table th {
    background: var(--surface-color);
    padding: 0.85rem 1.25rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.file-table th:last-child {
    text-align: right;
    width: 100px;
}

.file-table td {
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.file-table tr:last-child td {
    border-bottom: none;
}

.file-table tr:hover td {
    background: var(--accent-light);
}

.file-table .file-name {
    font-weight: 500;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.file-actions {
    display: flex;
    gap: 0.25rem;
    justify-content: flex-end;
}

/* --- Spinner --- */

.spinner-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* --- Empty State --- */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
    gap: 0.75rem;
}

.empty-state svg {
    opacity: 0.3;
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

.empty-hint {
    font-size: 0.85rem !important;
    font-weight: 400 !important;
    opacity: 0.7;
}

/* --- Footer --- */

footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    margin-top: auto;
}

footer p {
    font-size: 0.85rem;
    margin: 0;
    color: var(--text-secondary);
}

/* --- Toast Notification --- */

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--text-primary);
    color: white;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    animation: slideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toast.success {
    background: var(--success-color);
}

.toast.error {
    background: var(--danger-color);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* --- Responsive --- */

@media (max-width: 640px) {
    .login-card {
        padding: 2.5rem 1.5rem;
        margin: 0 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .file-table th:nth-child(3),
    .file-table td:nth-child(3) {
        display: none;
    }

    .drop-zone {
        padding: 2rem 1rem;
    }

    .container {
        padding: 0 1rem;
    }
}

/* --- Confirm Dialog --- */

.confirm-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
    animation: fadeIn 0.2s ease;
}

.confirm-dialog {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    max-width: 400px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.confirm-dialog h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.confirm-dialog p {
    margin-bottom: 1.5rem;
}

.confirm-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* --- Admin: Role Badge --- */

.role-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--accent-color);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    font-family: var(--font-mono);
}

/* --- Admin: Screen --- */

#admin-screen {
    align-items: flex-start;
    padding-top: 7rem;
}

/* --- Admin: Customer Cards --- */

.admin-customer-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.customer-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed), transform 0.15s;
}

.customer-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.08);
    transform: translateY(-1px);
}

.customer-card-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.customer-card-icon {
    width: 44px;
    height: 44px;
    background: var(--accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    flex-shrink: 0;
}

.customer-card-info strong {
    display: block;
    font-size: 1rem;
    color: var(--text-primary);
}

.customer-card-meta {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    margin-top: 0.15rem;
}

.customer-card-arrow {
    color: var(--text-secondary);
    opacity: 0.4;
    transition: opacity var(--transition-speed), transform var(--transition-speed);
    flex-shrink: 0;
}

.customer-card:hover .customer-card-arrow {
    opacity: 1;
    transform: translateX(3px);
    color: var(--accent-color);
}

/* --- Admin: Add Customer Form --- */

.add-customer-form {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem 2rem;
    margin-bottom: 1.5rem;
}

.add-customer-form h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 180px;
    margin-bottom: 0;
}

.form-group-actions {
    display: flex;
    gap: 0.5rem;
    flex: 0 0 auto !important;
    min-width: auto !important;
    padding-bottom: 0.1rem;
}

@media (max-width: 640px) {
    .form-row {
        flex-direction: column;
    }

    .form-group-actions {
        width: 100%;
        justify-content: stretch;
    }

    .form-group-actions .btn {
        flex: 1;
    }

    .customer-card-icon {
        display: none;
    }
}