@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=DM+Serif+Display:ital@0;1&display=swap');

:root {
    --krupp-red: #F24423;
    --krupp-red-hover: #d13619;
    --krupp-red-muted: rgba(242, 68, 35, 0.08);
    --bg-app: #F4F5F7;
    --bg-panel: #FFFFFF;
    --bg-elevated: #F8F9FA;
    --bg-surface: #FFFFFF;
    --bg-main: #FFFFFF;
    --text-main: #111827;
    --text-muted: #6B7280;
    --text-light: #9CA3AF;
    --border-light: #E5E7EB;
    --border-strong: #D1D5DB;
    --shadow-soft: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-float: 0 10px 40px rgba(0,0,0,0.10);
    --radius: 8px;
}

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

body {
    font-family: 'DM Sans', system-ui, sans-serif;
    background: var(--bg-app);
    color: var(--text-main);
    overflow: hidden;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 10px; }

/* ── BUTTONS ── */
button { cursor: pointer; font-family: inherit; border-radius: 6px; font-weight: 600; font-size: 0.875em; transition: all 0.18s ease; border: none; }

.btn-primary {
    background: var(--krupp-red);
    color: #fff;
    border: none;
}
.btn-primary:hover {
    background: var(--krupp-red-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(242,68,35,0.3);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1.5px solid var(--border-strong);
}
.btn-outline:hover {
    border-color: var(--text-main);
    background: var(--bg-elevated);
}

.regen-btn {
    padding: 6px 12px;
    font-size: 0.78em;
    background: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.2s;
}

.regen-btn:hover:not(:disabled) {
    background: var(--bg-elevated);
    border-color: var(--border-strong);
    transform: translateY(-1px);
}

.regen-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--bg-app);
}

.regen-btn.loading {
    color: var(--text-muted);
}

.spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(0,0,0,0.1);
    border-top-color: var(--krupp-red);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

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

/* ── INPUTS ── */
input[type="text"], input[type="password"], textarea {
    font-family: inherit;
    background: var(--bg-surface);
    border: 1.5px solid var(--border-strong);
    color: var(--text-main);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 0.9em;
}
input:focus, textarea:focus {
    border-color: var(--krupp-red);
    box-shadow: 0 0 0 3px var(--krupp-red-muted);
}

/* ════════════════════════════════════════
   LOGIN SCREEN
════════════════════════════════════════ */
#login-screen {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-app);
}

.login-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 52px 44px;
    width: 400px;
    text-align: center;
    box-shadow: var(--shadow-float);
}

.login-logo {
    font-family: 'DM Serif Display', serif;
    font-size: 3.8em;
    color: var(--krupp-red);
    letter-spacing: -2px;
    line-height: 1;
    margin-bottom: 6px;
}
.login-logo span { color: var(--krupp-red); }

.login-subtitle {
    font-size: 0.72em;
    color: var(--text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 36px;
    font-weight: 500;
}

.login-input {
    width: 100%;
    padding: 13px 16px;
    margin-bottom: 12px;
    display: block;
}

.login-error {
    color: #ef4444;
    font-size: 0.82em;
    margin-top: 12px;
    display: none;
    min-height: 16px;
}

/* ════════════════════════════════════════
   CLIENT DASHBOARD
════════════════════════════════════════ */
#client-dashboard {
    display: none;
    height: 100vh;
    flex-direction: column;
    overflow-y: auto;
    background: var(--bg-app);
}

.dashboard-topbar {
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-light);
    padding: 0 10%;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-soft);
}

.dashboard-logo {
    font-family: 'DM Serif Display', serif;
    font-size: 1.8em;
    color: var(--krupp-red);
    letter-spacing: -1px;
}

.topbar-right { display: flex; align-items: center; gap: 20px; }
.topbar-user { text-align: right; }
.user-name { font-weight: 600; font-size: 0.9em; color: var(--text-main); }
.user-role { font-size: 0.75em; color: var(--text-muted); }

.dashboard-body {
    padding: 52px 10%;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.dashboard-title {
    font-family: 'DM Serif Display', serif;
    font-size: 2.8em;
    color: var(--krupp-red);
    letter-spacing: -1.5px;
    line-height: 1;
    margin-bottom: 8px;
}

.dashboard-subtitle {
    color: var(--text-muted);
    font-size: 1em;
}

.section-label {
    font-size: 0.75em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

#notebook-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ── SESSION SIDEBAR (Claude-style) ── */
#session-list::-webkit-scrollbar { width: 4px; }
#session-list::-webkit-scrollbar-track { background: transparent; }
#session-list::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }

#dashboard-main::-webkit-scrollbar { width: 6px; }
#dashboard-main::-webkit-scrollbar-track { background: transparent; }
#dashboard-main::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }

.client-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-left: 4px solid var(--krupp-red);
    border-radius: var(--radius);
    padding: 20px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-soft);
}
.client-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-float);
    border-color: var(--krupp-red);
}

.client-initials {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: var(--krupp-red-muted);
    color: var(--krupp-red);
    font-weight: 700;
    font-size: 1.1em;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.client-info { margin-left: 20px; }
.client-name { font-size: 1.15em; font-weight: 600; color: var(--text-main); margin-bottom: 3px; }
.client-desc { font-size: 0.85em; color: var(--text-muted); }

.client-meta {
    display: flex;
    align-items: center;
    gap: 36px;
    color: var(--text-muted);
    font-size: 0.85em;
}
.meta-stat .stat-num { font-weight: 700; font-size: 1.15em; color: var(--text-main); }
.status-badge {
    color: #10b981;
    background: rgba(16,185,129,0.1);
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.78em;
    font-weight: 700;
    letter-spacing: 0.5px;
}
.card-arrow { font-size: 1.4em; color: var(--text-muted); }

.empty-state {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.9em;
    padding: 24px 0;
}

#reports-grid {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-soft);
}

/* ════════════════════════════════════════
   MODALS
════════════════════════════════════════ */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-card {
    background: var(--bg-panel);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-float);
}

.modal-title {
    font-size: 1.3em;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.modal-subtitle {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.5;
}

.modal-textarea {
    width: 100%;
    height: 110px;
    padding: 12px;
    resize: none;
    margin-bottom: 24px;
    display: block;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.upload-zone {
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    margin-bottom: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--krupp-red);
    background: var(--krupp-red-muted);
}
.upload-icon { font-size: 2em; margin-bottom: 8px; }
.upload-label { font-weight: 600; color: var(--text-main); margin-bottom: 4px; font-size: 0.95em; }
.upload-hint { font-size: 0.78em; color: var(--text-muted); }

.divider-text {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text-muted);
    font-size: 0.75em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.divider-text::before, .divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-light);
}

/* ════════════════════════════════════════
   WORKSPACE NAV
════════════════════════════════════════ */
#main-workspace {
    display: none;
    height: 100vh;
    flex-direction: column;
}

.workspace-nav {
    height: 72px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    box-shadow: var(--shadow-soft);
    z-index: 10;
    flex-shrink: 0;
}

.workspace-nav-left { display: flex; align-items: center; height: 100%; gap: 24px; }
.workspace-nav-right { display: flex; align-items: center; gap: 24px; }

.workspace-logo {
    font-family: 'DM Serif Display', serif;
    font-size: 1.5em;
    color: var(--krupp-red);
    letter-spacing: -0.5px;
}

.nav-divider {
    width: 1px;
    height: 24px;
    background: var(--border-light);
}

.workspace-client {
    font-weight: 700;
    font-size: 0.95em;
    color: var(--text-main);
}

.nav-tab {
    height: 72px;
    display: flex;
    align-items: center;
    text-decoration: none;
    font-size: 0.9em;
    color: var(--text-muted);
    padding: 0 24px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    margin-top: 1px;
}
.nav-tab:hover { color: var(--text-main); }
.nav-tab.active {
    color: var(--krupp-red);
    border-bottom: 2px solid var(--krupp-red);
    font-weight: 600;
}

.version-indicator {
    font-size: 0.75em;
    color: var(--text-light);
    font-weight: 400;
    display: none;
}

.nav-user {
    font-size: 0.85em;
    font-weight: 500;
    color: var(--text-muted);
}

/* ════════════════════════════════════════
   WORKSPACE PANELS
════════════════════════════════════════ */
.workspace-content {
    flex: 1;
    display: flex;
    flex-direction: row;
    gap: 10px;
    padding: 10px;
    background: var(--bg-app);
    overflow: hidden;
    height: calc(100vh - 60px);
}

.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.panel-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    background: var(--bg-panel);
}

.panel-title {
    font-weight: 700;
    font-size: 0.92em;
    color: var(--text-main);
    letter-spacing: -0.2px;
}

/* ── CHAT ── */
.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message { display: flex; max-width: 88%; }
.ai-message { align-self: flex-start; gap: 10px; }
.user-message { align-self: flex-end; }

.ai-avatar { font-size: 1.4em; flex-shrink: 0; margin-top: 2px; }

.ai-message .message-content {
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    padding: 14px 18px;
    border-radius: 0 12px 12px 12px;
    font-size: 0.88em;
    line-height: 1.6;
    color: var(--text-main);
}

.user-message .message-content {
    background: var(--krupp-red);
    color: #fff;
    padding: 12px 18px;
    border-radius: 12px 12px 0 12px;
    font-size: 0.88em;
    line-height: 1.6;
    box-shadow: 0 4px 12px rgba(242,68,35,0.25);
}

.chat-input-bar {
    padding: 12px 16px;
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-panel);
    flex-shrink: 0;
    flex-direction: column;
}

.chat-input {
    flex: 1;
    width: 100%;
    padding: 10px 14px;
    font-size: 0.88em;
}

/* ── RESULTS ── */
.results-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: var(--bg-app);
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.3; }
}

/* NotebookLM style source items */
#sources-list::-webkit-scrollbar { width: 4px; }
#sources-list::-webkit-scrollbar-track { background: transparent; }
#sources-list::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }

.contact-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    margin-bottom: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: box-shadow 0.2s;
}
.contact-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }

.contact-card-header {
    padding: 14px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.contact-name {
    font-weight: 600;
    font-size: 0.95em;
    color: var(--text-main);
}
.contact-outlet {
    font-size: 0.82em;
    color: var(--text-muted);
    font-weight: 400;
}

.contact-toggle { color: var(--krupp-red); font-size: 1.1em; transition: transform 0.2s; }

.contact-details {
    display: none;
    padding: 14px 16px;
    border-top: 1px solid var(--border-light);
    background: var(--bg-elevated);
}
.contact-details.open { display: block; }

.contact-views { font-size: 0.82em; color: var(--text-muted); margin-bottom: 8px; }
.contact-summary { font-size: 0.88em; color: var(--text-main); line-height: 1.6; margin-bottom: 12px; }
.contact-link { color: var(--krupp-red); text-decoration: none; font-size: 0.85em; font-weight: 600; }
.contact-link:hover { text-decoration: underline; }

.btn-add {
    padding: 6px 14px;
    font-size: 0.82em;
    background: transparent;
    color: var(--text-main);
    border: 1.5px solid var(--border-strong);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.15s;
}
.btn-add.selected {
    background: var(--krupp-red);
    color: #fff;
    border-color: var(--krupp-red);
}

/* ── PITCH EDITOR ── */
.pitch-chips {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    width: 100%;
}

.chip {
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    color: var(--text-muted);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.78em;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
}
.chip:hover {
    border-color: var(--krupp-red);
    color: var(--krupp-red);
    background: var(--krupp-red-muted);
}

.pitch-editor {
    flex: 1;
    width: 100%;
    height: 100%;
    padding: 20px;
    border: none !important;
    background: transparent !important;
    resize: none;
    font-size: 0.92em;
    line-height: 1.8;
    color: var(--text-main);
    font-family: 'DM Sans', sans-serif;
    outline: none;
}

.approved-badge {
    background: rgba(16,185,129,0.12);
    color: #10b981;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.78em;
    font-weight: 700;
    letter-spacing: 0.3px;
}

/* ── SOURCES + THREADS ── */
.source-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-light);
    margin-bottom: 8px;
    cursor: pointer;
    transition: background 0.15s;
    font-size: 0.85em;
}
.source-item:hover { background: var(--bg-elevated); }
.source-info { overflow: hidden; }
.source-name { font-weight: 600; color: var(--text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.source-tag { color: var(--krupp-red); font-size: 0.75em; font-weight: 600; }
.source-tag-muted { color: var(--text-muted); font-size: 0.75em; }

.pitch-thread {
    padding: 9px 12px;
    border-radius: 4px;
    font-size: 0.87em;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
    margin-bottom: 4px;
}
.pitch-thread:hover { background: var(--bg-elevated); color: var(--text-main); }
.pitch-thread.active {
    background: var(--krupp-red-muted);
    color: var(--krupp-red);
    border-left: 3px solid var(--krupp-red);
    font-weight: 600;
    padding-left: 9px;
}

/* ── FILE UPLOAD LIST ── */
.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-elevated);
    border-radius: 6px;
    padding: 8px 12px;
    margin-bottom: 6px;
    
    font-size: 0.85em;
}
.file-item-left { display: flex; align-items: center; gap: 10px; }
.file-item-name { font-weight: 600; color: var(--text-main); }
.file-item-meta { font-size: 0.8em; color: var(--text-muted); }
.file-remove { background: none; border: none; color: var(--text-muted); font-size: 1em; cursor: pointer; padding: 0 4px; }
/* ── MODALS ── */
.modal-overlay, #load-list-modal, #save-list-modal {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: none; /* Controlled by JS */
    align-items: center;
    justify-content: center;
}

.modal-box, .list-modal-content {
    background: #ffffff !important;
    border-radius: 12px;
    padding: 28px;
    min-width: 480px;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    border: 1px solid var(--border-light);
}

/* ── ACCESSIBILITY UTILITIES ── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--krupp-red);
    outline-offset: 2px;
}