/* ====================================================================
   PowerWave Odyssey — Professional Demo Stylesheet
   Step-based workflow design
   ==================================================================== */

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

:root {
    --bg:          #0b0e17;
    --bg-panel:    #111827;
    --bg-card:     #1a2236;
    --bg-input:    #0f172a;
    --border:      #1e3a5f;
    --border-glow: #0ea5e9;
    --text:        #e2e8f0;
    --text-dim:    #94a3b8;
    --text-bright: #f8fafc;
    --accent:      #38bdf8;
    --accent2:     #0ea5e9;
    --success:     #22c55e;
    --success-dim: #15803d;
    --highlight:   #10b981;
    --danger:      #ef4444;
    --gold:        #f59e0b;
    --radius:      8px;
    --shadow:      0 4px 24px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 20px rgba(14,165,233,0.12);
}

html, body {
    height: 100%;
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
}

/* --- Header --- */
header {
    height: 56px;
    display: flex;
    align-items: center;
    padding: 0 24px;
    background: linear-gradient(90deg, #0f172a 0%, #1e293b 100%);
    border-bottom: 1px solid var(--border);
    position: relative;
    z-index: 10;
}
.header-content { display: flex; align-items: baseline; gap: 16px; }
.logo {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-bright);
}
.logo .accent { color: var(--accent); }
.tagline {
    font-size: 13px;
    color: var(--text-dim);
    font-weight: 400;
}

/* --- Main Layout --- */
main {
    display: flex;
    height: calc(100vh - 56px);
    overflow: hidden;
}

.panel { height: 100%; }

/* --- Left: Well Panel --- */
.well-panel {
    flex: 0 0 55%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    padding: 16px;
}

#wellCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* --- Right: Dashboard --- */
.dashboard {
    flex: 1;
    padding: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    overflow-y: auto;
    overflow-x: hidden;
}

/* Scrollbar */
.dashboard::-webkit-scrollbar { width: 6px; }
.dashboard::-webkit-scrollbar-track { background: transparent; }
.dashboard::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ====================================================================
   STEP-BASED WORKFLOW
   ==================================================================== */

.workflow {
    padding: 20px 20px 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* --- Individual Step --- */
.step {
    display: flex;
    gap: 14px;
    position: relative;
    transition: opacity 0.3s;
}

.step.disabled {
    opacity: 0.45;
    pointer-events: none;
}
.step.disabled .step-number {
    background: var(--bg-card);
    border-color: rgba(148,163,184,0.2);
    color: var(--text-dim);
}

/* --- Step Indicator (number + connector line) --- */
.step-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    width: 32px;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    background: var(--bg-card);
    border: 2px solid var(--border);
    color: var(--text-dim);
    transition: all 0.3s;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

/* Active step number */
.step.active .step-number {
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    border-color: var(--accent);
    color: #0f172a;
    box-shadow: 0 0 12px rgba(56,189,248,0.3);
}

/* Completed step — checkmark */
.step.completed .step-number {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
    font-size: 0;
}
.step.completed .step-number::after {
    content: '✓';
    font-size: 14px;
    font-weight: 700;
}

/* Connector line between steps */
.step-connector {
    width: 2px;
    flex: 1;
    min-height: 8px;
    background: var(--border);
    transition: background 0.3s;
}
.step.completed .step-connector {
    background: var(--success);
}
.step.active .step-connector {
    background: linear-gradient(to bottom, var(--accent), var(--border));
}

/* --- Step Body --- */
.step-body {
    flex: 1;
    min-width: 0;
    padding-bottom: 16px;
}

.step-header {
    display: flex;
    align-items: center;
    min-height: 32px;
    margin-bottom: 10px;
}

.step-title {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-dim);
    transition: color 0.3s;
}
.step.active .step-title,
.step.completed .step-title {
    color: var(--text-bright);
}

.step-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    box-shadow: var(--shadow);
    transition: border-color 0.3s, box-shadow 0.3s, max-height 0.5s ease, opacity 0.4s ease, padding 0.5s ease;
    max-height: 800px;
    overflow: hidden;
    opacity: 1;
}
.step.active .step-content {
    border-color: rgba(56,189,248,0.3);
    box-shadow: var(--shadow), var(--shadow-glow);
}

/* ====================================================================
   STEP 1: Load Well
   ==================================================================== */

.load-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.filename {
    font-size: 13px;
    color: var(--text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
}
.filename.loaded { color: var(--success); font-weight: 500; }

.well-info { margin-top: 12px; }
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px 16px;
}
.info-row {
    display: flex;
    justify-content: space-between;
    padding: 3px 0;
    font-size: 12px;
}
.info-label { color: var(--text-dim); }
.info-value { color: var(--text-bright); font-weight: 500; font-variant-numeric: tabular-nums; }

/* ====================================================================
   STEP 2: Configure Treatment
   ==================================================================== */

.config-row {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}
.config-row .flex-1 { flex: 1; min-width: 0; }

.param-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
}
.param-field { display: flex; flex-direction: column; gap: 3px; }
.param-field label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
}
.param-field input,
.param-field select {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 7px 9px;
    color: var(--text-bright);
    font-size: 13px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}
.param-field input:focus,
.param-field select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.12);
}
.param-field input::placeholder { color: var(--text-dim); opacity: 0.6; }
.param-field select option { background: var(--bg-card); color: var(--text); }
.param-field select option:disabled { color: var(--text-dim); }

/* Well Parameters collapsible panel */
.well-params-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    padding: 6px 0;
    font-size: 11px;
    color: var(--text-dim);
    cursor: pointer;
    user-select: none;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}
.well-params-toggle:hover { color: var(--accent2); }
.well-params-toggle .chevron {
    transition: transform 0.2s ease;
    margin-left: auto;
}
.well-params-toggle.open .chevron {
    transform: rotate(180deg);
}
.well-params-panel {
    padding: 10px 0 4px 0;
    border-top: 1px solid rgba(30,58,95,0.3);
}
.well-params-panel.hidden { display: none; }
.param-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}
.param-small input {
    font-size: 12px !important;
    padding: 5px 7px !important;
}
.param-small label {
    font-size: 9px !important;
}
.well-params-note {
    margin-top: 8px;
    font-size: 9px;
    color: var(--text-dim);
    opacity: 0.6;
    font-style: italic;
}

.run-select {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 7px 9px;
    color: var(--text-bright);
    font-size: 13px;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    width: 100%;
}
.run-select:focus { border-color: var(--accent); }
.run-select option { background: var(--bg-card); color: var(--text); padding: 4px; }

/* ====================================================================
   BUTTONS
   ==================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: filter 0.15s, border-color 0.15s;
    letter-spacing: 0.3px;
    white-space: nowrap;
}
.btn svg { flex-shrink: 0; }

.btn-primary {
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    color: #0f172a;
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn-small {
    padding: 5px 10px;
    font-size: 11px;
}

.btn-accent {
    background: linear-gradient(135deg, #7c3aed, #a855f7);
    color: #fff;
}
.btn-accent:hover:not(:disabled) { filter: brightness(1.15); transform: translateY(-1px); }
.btn-accent:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    filter: none;
    transform: none;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-dim), var(--success));
    color: #0f172a;
}
.btn-success:hover:not(:disabled) { filter: brightness(1.1); transform: translateY(-1px); }
.btn-success:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    filter: none;
    transform: none;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 7px 14px;
    font-size: 12px;
}
.btn-outline:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--text-bright);
    background: rgba(56,189,248,0.05);
}
.btn-outline:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.btn-cancel {
    background: transparent;
    border: 1px solid #ef4444;
    color: #ef4444;
    padding: 7px 14px;
    font-size: 12px;
}
.btn-cancel:hover {
    background: rgba(239, 68, 68, 0.12);
    color: #f87171;
    border-color: #f87171;
}

/* ====================================================================
   STEP 3: Compute Schedule
   ==================================================================== */

.compute-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.phase-text {
    font-size: 12px;
    color: var(--accent);
    font-weight: 500;
}
.phase-text.computing::before {
    content: '';
    display: inline-block;
    width: 12px; height: 12px;
    border: 2px solid var(--accent);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 6px;
    vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Progress bar */
.progress-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
}
.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
    border: 1px solid rgba(30,58,95,0.5);
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent2), var(--accent));
    border-radius: 3px;
    transition: width 0.3s ease-out;
}
.progress-fill.indeterminate {
    /* Smooth left-to-right fill managed by JS — no bouncing */
    transition: width 0.5s linear;
}
.progress-time {
    font-size: 11px;
    color: var(--text-dim);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    min-width: 72px;
    text-align: right;
}

/* Algorithm step indicator — flashes during optimization */
.algo-step {
    margin-top: 6px;
    font-size: 11px;
    color: var(--accent2);
    opacity: 0.7;
    font-family: 'Inter', monospace;
    letter-spacing: 0.02em;
    min-height: 16px;
    transition: opacity 0.3s ease;
}
.algo-step.fade-in {
    animation: algoFadeIn 0.4s ease-out;
}
@keyframes algoFadeIn {
    0%   { opacity: 0; transform: translateY(2px); }
    100% { opacity: 0.7; transform: translateY(0); }
}

/* Schedule summary */
.schedule-summary {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(30,58,95,0.5);
}

/* ====================================================================
   STEP 4: Run Animation
   ==================================================================== */

.run-row {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* Speed preset buttons */
.speed-presets {
    display: flex;
    gap: 0;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
}
.speed-btn {
    background: var(--bg-input);
    border: none;
    border-right: 1px solid var(--border);
    color: var(--text-dim);
    padding: 5px 10px;
    font-size: 11px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s;
    letter-spacing: 0.3px;
}
.speed-btn:last-child { border-right: none; }
.speed-btn:hover {
    color: var(--text-bright);
    background: rgba(56,189,248,0.08);
}
.speed-btn.active {
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    color: #0f172a;
}

/* ====================================================================
   STEP 5: Results & Export
   ==================================================================== */

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 10px;
}
.metric {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    text-align: center;
}
.metric-value {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-bright);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}
.metric-label {
    display: block;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
    margin-top: 2px;
}
.metric.highlight {
    border-color: var(--highlight);
    background: rgba(16, 185, 129, 0.08);
    grid-column: 1 / -1;
}
.metric.highlight .metric-value {
    color: var(--highlight);
    font-size: 24px;
}

/* Legend */
.legend-items {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(30,58,95,0.4);
}
.legend-item { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--text-dim); }
.legend-swatch {
    width: 12px; height: 12px;
    border-radius: 3px;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Export row */
.export-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ====================================================================
   Utility
   ==================================================================== */
.hidden { display: none !important; }

/* --- Collapsible step sections --- */
.collapse-toggle {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: 4px;
    margin-left: auto;
    border-radius: 4px;
    transition: transform 0.2s, color 0.15s;
    display: flex;
    align-items: center;
}
.collapse-toggle:hover { color: var(--text-bright); }
.step.collapsed .collapse-toggle { transform: rotate(-90deg); }
.step.collapsed .step-content {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-color: transparent;
    box-shadow: none;
    overflow: hidden;
}

/* --- Schedule bar hover tooltip --- */
.schedule-tooltip {
    display: none;
    position: fixed;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--accent);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 11px;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    color: var(--text-bright);
    pointer-events: none;
    z-index: 1000;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0,0,0,0.5), 0 0 8px rgba(14,165,233,0.15);
    line-height: 1.5;
}
.schedule-tooltip.visible { display: block; }