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

:root {
    --bg: #0f0f11;
    --card-bg: #18181c;
    --card-border: #2a2a30;
    --text-primary: #f3f4f6;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --input-bg: #121214;
    --input-border: #2a2a30;
    --input-focus: #10b981;
    
    /* Buttons */
    --btn-success-bg: #1b5e20;
    --btn-success-hover: #2e7d32;
    --btn-success-text: #ffffff;
    
    --btn-secondary-bg: #252529;
    --btn-secondary-border: #3f3f46;
    --btn-secondary-text: #e4e4e7;
    --btn-secondary-hover: #2e2e33;
    
    --btn-clear-border: #ef5350;
    --btn-clear-text: #ef5350;
    --btn-clear-hover: rgba(239, 83, 80, 0.08);
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    background-color: var(--bg);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

.container {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 40px 48px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===================================
   HEADER
=================================== */
header {
    margin-bottom: 32px;
    text-align: left;
}

h1 {
    margin: 0 0 8px 0;
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

header p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 15px;
}

/* ===================================
   CARD PANEL
=================================== */
.card-panel {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Custom File Select Layout */
.file-select-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

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

.file-tip {
    font-size: 12px;
    color: var(--text-muted);
    margin: 0;
}

/* Text Input Styling */
.text-input {
    width: 100%;
    padding: 10px 14px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.text-input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.15);
}

/* Algorithms Checkboxes list */
.algorithms-list {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 2px;
}

.algo-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    user-select: none;
    transition: color 0.15s ease;
}

.algo-checkbox-label:hover {
    color: var(--text-primary);
}

.algo-checkbox-label input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    border-radius: 3px;
    display: grid;
    place-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
}

.algo-checkbox-label input[type="checkbox"]::before {
    content: "";
    width: 8px;
    height: 8px;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    box-shadow: inset 1em 1em var(--input-focus);
    background-color: var(--input-focus);
    clip-path: polygon(14% 0%, 0% 14%, 28% 42%, 100% 0%, 100% 14%, 28% 70%, 0% 42%);
    transform-origin: center;
}

.algo-checkbox-label input[type="checkbox"]:checked {
    border-color: var(--input-focus);
}

.algo-checkbox-label input[type="checkbox"]:checked::before {
    transform: scale(1);
}

/* Action Buttons Container */
.actions-row {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

/* Buttons Styles */
button, .btn {
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

button:focus-visible, .btn:focus-visible {
    outline: 2px solid var(--input-focus);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--btn-success-bg);
    color: var(--btn-success-text);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--btn-success-hover);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Pulse the recalculate button when a re-run is pending */
.btn-primary.needs-recalc {
    animation: pulse-green 1.5s ease-in-out infinite;
    box-shadow: 0 0 0 0 rgba(46, 125, 50, 0.6);
}

@keyframes pulse-green {
    0%   { box-shadow: 0 0 0 0 rgba(46, 125, 50, 0.6); }
    60%  { box-shadow: 0 0 0 6px rgba(46, 125, 50, 0); }
    100% { box-shadow: 0 0 0 0 rgba(46, 125, 50, 0); }
}

.btn-secondary {
    background-color: var(--btn-secondary-bg);
    border-color: var(--btn-secondary-border);
    color: var(--btn-secondary-text);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--btn-secondary-hover);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-clear {
    background-color: transparent;
    border-color: var(--btn-clear-border);
    color: var(--btn-clear-text);
    margin-left: auto; /* Push clear button to the right */
}

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

/* ===================================
   STATUS / INFO BAR
=================================== */
.status-bar {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    padding: 14px 20px;
    display: flex;
    gap: 28px;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 14px;
    align-items: center;
}

.status-bar span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-bar strong {
    color: var(--text-primary);
    font-weight: 600;
}

.status-ready {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===================================
   SEARCH INPUT
=================================== */
.search-container {
    width: 100%;
    margin-bottom: 20px;
}

.search-input {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.15s ease;
}

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

.search-input:focus {
    outline: none;
    border-color: var(--input-focus);
}

/* ===================================
   TABLE
=================================== */
.table-container {
    flex: 1;
    min-height: 350px;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    overflow: auto;
    background-color: var(--card-bg);
    margin-bottom: 24px;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.table-container.dragover {
    border-color: var(--input-focus);
    background-color: #1c2a22;
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
    text-align: left;
}

thead {
    background-color: #202024;
    position: sticky;
    top: 0;
    z-index: 10;
}

th {
    padding: 14px 16px;
    border-bottom: 1px solid var(--card-border);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    position: relative;
    user-select: none;
}

td {
    padding: 14px 16px;
    border-bottom: 1px solid #202024;
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

tbody tr {
    transition: background-color 0.15s ease;
}

tbody tr:hover {
    background-color: #202024;
}

/* Column resizer styled cleanly */
.col-resizer {
    position: absolute;
    top: 0;
    right: 0;
    width: 4px;
    height: 100%;
    cursor: col-resize;
    z-index: 1;
}

.col-resizer:hover,
.col-resizer:active {
    background-color: var(--input-focus);
}

/* Hash column headers with copy icon */
.th-header-content {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.header-copy-icon {
    font-size: 14px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.15s ease, transform 0.1s ease;
}

.header-copy-icon:hover {
    opacity: 1;
    transform: scale(1.1);
}

.header-copy-icon:active {
    transform: scale(0.9);
}

/* Monospace hashes */
.hash-cell {
    font-family: 'Cascadia Code', 'Consolas', 'SFMono-Regular', Menlo, Monaco, monospace;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Empty State styling */
.empty-row td {
    padding: 60px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* Progress bar container and animation */
.progress-container {
    height: 4px;
    background-color: #202024;
    width: 100%;
    overflow: hidden;
    position: relative;
    border-radius: 2px;
    margin-bottom: 20px;
    display: none;
}

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

/* ===================================
   FOOTER
=================================== */
footer {
    margin-top: auto;
    padding-top: 16px;
    text-align: right;
    color: var(--text-muted);
    font-size: 12px;
}

/* ===================================
   SCROLLBARS
=================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--card-bg);
}

::-webkit-scrollbar-thumb {
    background: #3f3f46;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #52525b;
}

/* ===================================
   RESPONSIVE DESIGN
=================================== */
@media (max-width: 768px) {
    .container {
        padding: 24px 16px;
    }
    
    .actions-row {
        flex-direction: column;
        gap: 8px;
    }
    
    .btn-clear {
        margin-left: 0;
    }
    
    .status-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}