feat: add CombatStartModal for DM combat setup

client/src/components/CombatStartModal.module.css

@@ -0,0 +1,225 @@
+.backdrop {
+  position: absolute;
+  inset: 0;
+  background: var(--bg-overlay, rgba(0,0,0,0.6));
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 200;
+  padding: 1rem;
+}
+
+.modal {
+  background: var(--bg-modal, #1a1814);
+  background-image: var(--texture-surface), var(--texture-speckle);
+  background-size: 256px 256px, 128px 128px;
+  border: 2px solid rgba(var(--gold-rgb), 0.3);
+  border-radius: 4px;
+  width: 100%;
+  max-width: 480px;
+  max-height: 85vh;
+  overflow-y: auto;
+  padding: 1.25rem;
+  box-shadow: 0 8px 40px rgba(0,0,0,0.7);
+}
+
+.modalHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 1.25rem;
+}
+
+.modalTitle {
+  font-family: var(--font-display, "Cinzel", Georgia, serif);
+  font-size: 1rem;
+  font-weight: 700;
+  color: var(--gold);
+  letter-spacing: 0.05em;
+}
+
+.closeBtn {
+  background: none;
+  border: none;
+  color: var(--text-secondary);
+  font-size: 1.2rem;
+  cursor: pointer;
+  padding: 0.1rem 0.3rem;
+}
+
+.closeBtn:hover {
+  color: var(--text-primary);
+}
+
+.field {
+  margin-bottom: 1rem;
+}
+
+.fieldLabel {
+  display: block;
+  font-family: var(--font-display, "Cinzel", Georgia, serif);
+  font-size: 0.68rem;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  color: var(--text-secondary);
+  margin-bottom: 0.4rem;
+}
+
+.input {
+  width: 100%;
+  font-size: 0.82rem;
+  color: var(--text-primary);
+  background: var(--bg-input, rgba(0,0,0,0.3));
+  border: 1px solid rgba(var(--gold-rgb), 0.2);
+  border-radius: 3px;
+  padding: 0.4rem 0.6rem;
+  font-family: inherit;
+}
+
+.input:focus {
+  outline: none;
+  border-color: rgba(var(--gold-rgb), 0.5);
+}
+
+.charList {
+  display: flex;
+  flex-direction: column;
+  gap: 0.3rem;
+  background: var(--bg-inset, rgba(0,0,0,0.2));
+  border: 1px solid rgba(var(--gold-rgb), 0.12);
+  border-radius: 3px;
+  padding: 0.5rem 0.6rem;
+}
+
+.charRow {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  cursor: pointer;
+  font-size: 0.82rem;
+  color: var(--text-primary);
+}
+
+.charRow input[type="checkbox"] {
+  accent-color: var(--gold);
+}
+
+.charDot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.charName {
+  flex: 1;
+}
+
+.enemyRow {
+  display: flex;
+  gap: 0.4rem;
+  align-items: center;
+  margin-bottom: 0.35rem;
+}
+
+.enemyRow .input {
+  flex: 1;
+}
+
+.hpInput {
+  max-width: 80px;
+  flex: 0 0 80px !important;
+}
+
+.removeRowBtn {
+  font-size: 0.7rem;
+  padding: 0.25rem 0.4rem;
+  background: none;
+  border: 1px solid rgba(var(--gold-rgb), 0.15);
+  border-radius: 3px;
+  color: var(--text-tertiary);
+  cursor: pointer;
+  flex-shrink: 0;
+  transition: all 0.12s;
+}
+
+.removeRowBtn:hover:not(:disabled) {
+  color: var(--danger);
+  border-color: rgba(var(--danger-rgb), 0.3);
+}
+
+.removeRowBtn:disabled {
+  opacity: 0.3;
+  cursor: not-allowed;
+}
+
+.addRowBtn {
+  font-family: var(--font-display, "Cinzel", Georgia, serif);
+  font-size: 0.68rem;
+  font-weight: 600;
+  padding: 0.3rem 0.6rem;
+  background: transparent;
+  border: 1px dashed rgba(var(--gold-rgb), 0.3);
+  border-radius: 3px;
+  color: var(--text-secondary);
+  cursor: pointer;
+  width: 100%;
+  margin-top: 0.15rem;
+  transition: all 0.12s;
+}
+
+.addRowBtn:hover {
+  border-color: rgba(var(--gold-rgb), 0.5);
+  color: var(--gold);
+}
+
+.actions {
+  display: flex;
+  gap: 0.5rem;
+  margin-top: 1.25rem;
+  padding-top: 1rem;
+  border-top: 1px solid rgba(var(--gold-rgb), 0.15);
+}
+
+.startBtn {
+  font-family: var(--font-display, "Cinzel", Georgia, serif);
+  font-size: 0.82rem;
+  font-weight: 700;
+  letter-spacing: 0.05em;
+  padding: 0.5rem 1rem;
+  background: rgba(var(--gold-rgb), 0.85);
+  border: none;
+  border-radius: 4px;
+  color: var(--btn-active-text);
+  cursor: pointer;
+  flex: 1;
+  transition: filter 0.12s;
+}
+
+.startBtn:hover:not(:disabled) {
+  filter: brightness(1.1);
+}
+
+.startBtn:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.cancelBtn {
+  font-family: var(--font-display, "Cinzel", Georgia, serif);
+  font-size: 0.82rem;
+  font-weight: 600;
+  padding: 0.5rem 1rem;
+  background: transparent;
+  border: 1px solid rgba(var(--gold-rgb), 0.3);
+  border-radius: 4px;
+  color: var(--text-secondary);
+  cursor: pointer;
+  transition: all 0.12s;
+}
+
+.cancelBtn:hover {
+  border-color: rgba(var(--gold-rgb), 0.5);
+  color: var(--gold);
+}

client/src/components/CombatStartModal.tsx

@@ -0,0 +1,163 @@
+import { useState } from "react";
+import socket from "../socket.js";
+import type { Character } from "../types.js";
+import styles from "./CombatStartModal.module.css";
+
+interface CombatStartModalProps {
+  characters: Character[];
+  campaignId: number;
+  onClose: () => void;
+}
+
+interface EnemyEntry {
+  key: number;
+  name: string;
+  hp_max: string;
+}
+
+let enemyKey = 0;
+
+export default function CombatStartModal({
+  characters,
+  campaignId,
+  onClose,
+}: CombatStartModalProps) {
+  const [label, setLabel] = useState("");
+  const [selectedCharIds, setSelectedCharIds] = useState<Set<number>>(
+    new Set(characters.map((c) => c.id))
+  );
+  const [enemies, setEnemies] = useState<EnemyEntry[]>([
+    { key: enemyKey++, name: "", hp_max: "" },
+  ]);
+
+  function toggleChar(id: number) {
+    setSelectedCharIds((prev) => {
+      const next = new Set(prev);
+      if (next.has(id)) {
+        next.delete(id);
+      } else {
+        next.add(id);
+      }
+      return next;
+    });
+  }
+
+  function updateEnemy(key: number, field: "name" | "hp_max", value: string) {
+    setEnemies((prev) =>
+      prev.map((e) => (e.key === key ? { ...e, [field]: value } : e))
+    );
+  }
+
+  function addEnemyRow() {
+    setEnemies((prev) => [...prev, { key: enemyKey++, name: "", hp_max: "" }]);
+  }
+
+  function removeEnemyRow(key: number) {
+    setEnemies((prev) => prev.filter((e) => e.key !== key));
+  }
+
+  function handleStart() {
+    const validEnemies = enemies
+      .filter((e) => e.name.trim() && parseInt(e.hp_max, 10) > 0)
+      .map((e) => ({ name: e.name.trim(), hp_max: parseInt(e.hp_max, 10) }));
+
+    socket.emit("initiative:start", {
+      campaignId,
+      label: label.trim() || undefined,
+      character_ids: Array.from(selectedCharIds),
+      enemies: validEnemies,
+    });
+    onClose();
+  }
+
+  const canStart = selectedCharIds.size > 0;
+
+  return (
+    <div className={styles.backdrop} onClick={onClose}>
+      <div className={styles.modal} onClick={(e) => e.stopPropagation()}>
+        <div className={styles.modalHeader}>
+          <span className={styles.modalTitle}>Start Combat</span>
+          <button className={styles.closeBtn} onClick={onClose}>✕</button>
+        </div>
+
+        {/* Optional label */}
+        <div className={styles.field}>
+          <label className={styles.fieldLabel}>Label (optional)</label>
+          <input
+            className={styles.input}
+            placeholder="e.g. Throne Room"
+            value={label}
+            onChange={(e) => setLabel(e.target.value)}
+          />
+        </div>
+
+        {/* Character selection */}
+        <div className={styles.field}>
+          <label className={styles.fieldLabel}>Party Members</label>
+          <div className={styles.charList}>
+            {characters.map((c) => (
+              <label key={c.id} className={styles.charRow}>
+                <input
+                  type="checkbox"
+                  checked={selectedCharIds.has(c.id)}
+                  onChange={() => toggleChar(c.id)}
+                />
+                <span
+                  className={styles.charDot}
+                  style={{ background: c.color }}
+                />
+                <span className={styles.charName}>{c.name}</span>
+              </label>
+            ))}
+          </div>
+        </div>
+
+        {/* Enemy entries */}
+        <div className={styles.field}>
+          <label className={styles.fieldLabel}>Enemies</label>
+          {enemies.map((e) => (
+            <div key={e.key} className={styles.enemyRow}>
+              <input
+                className={styles.input}
+                placeholder="Name (e.g. Goblin x3)"
+                value={e.name}
+                onChange={(ev) => updateEnemy(e.key, "name", ev.target.value)}
+              />
+              <input
+                className={`${styles.input} ${styles.hpInput}`}
+                placeholder="Max HP"
+                type="number"
+                min={1}
+                value={e.hp_max}
+                onChange={(ev) => updateEnemy(e.key, "hp_max", ev.target.value)}
+              />
+              <button
+                className={styles.removeRowBtn}
+                onClick={() => removeEnemyRow(e.key)}
+                disabled={enemies.length === 1}
+              >
+                ✕
+              </button>
+            </div>
+          ))}
+          <button className={styles.addRowBtn} onClick={addEnemyRow}>
+            + Add Another Enemy
+          </button>
+        </div>
+
+        <div className={styles.actions}>
+          <button
+            className={styles.startBtn}
+            onClick={handleStart}
+            disabled={!canStart}
+          >
+            Roll Initiative ⚔
+          </button>
+          <button className={styles.cancelBtn} onClick={onClose}>
+            Cancel
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}