"use client";

import React, { useState } from "react";
import Link from "next/link";
import {
  Search,
  RotateCcw,
  Plus,
  Eye,
  Edit2,
  Trash2,
  ChevronLeft,
  ChevronRight,
  FileSpreadsheet,
  FileText,
  Building2,
  CheckCircle2,
  X,
  MapPin,
  Sliders,
  Tv,
} from "lucide-react";
import { toast } from "sonner";

interface ClassroomRecord {
  id: string;
  roomNumber: string;
  blockWing: string;
  roomType: string;
  capacity: number;
  avSetup: string;
  status: "Available" | "Occupied" | "Reserved";
}

const initialClassrooms: ClassroomRecord[] = [
  {
    id: "cls-1",
    roomNumber: "Room 101",
    blockWing: "North Wing - Level 1",
    roomType: "Smart Lecture Hall",
    capacity: 60,
    avSetup: "Interactive Touch Display & Wireless Mic",
    status: "Available",
  },
  {
    id: "cls-2",
    roomNumber: "Room 102",
    blockWing: "North Wing - Level 1",
    roomType: "Lecture Hall",
    capacity: 60,
    avSetup: "Standard Projector & Audio Array",
    status: "Occupied",
  },
  {
    id: "cls-3",
    roomNumber: "Room 103",
    blockWing: "Main Academic Block",
    roomType: "Tiered Amphitheatre",
    capacity: 90,
    avSetup: "Dual Laser Projectors & Surround Sound",
    status: "Occupied",
  },
  {
    id: "cls-4",
    roomNumber: "Room 201",
    blockWing: "East Wing - Level 2",
    roomType: "Seminar Classroom",
    capacity: 45,
    avSetup: "HD Projector & Smart Whiteboard",
    status: "Available",
  },
  {
    id: "cls-5",
    roomNumber: "Conference Room A",
    blockWing: "Administrative Block",
    roomType: "Executive Boardroom",
    capacity: 30,
    avSetup: "Telepresence Video Suite",
    status: "Reserved",
  },
  {
    id: "cls-6",
    roomNumber: "Room 204",
    blockWing: "West Wing - Level 2",
    roomType: "Interactive Tutorial Room",
    capacity: 35,
    avSetup: "Smart Flat Panel & Webcams",
    status: "Available",
  },
];

export default function ClassroomAllocationPage() {
  const [classrooms, setClassrooms] = useState<ClassroomRecord[]>(initialClassrooms);
  const [selectedWing, setSelectedWing] = useState("All Wings");
  const [selectedType, setSelectedType] = useState("All Types");
  const [selectedStatus, setSelectedStatus] = useState("All Status");
  const [searchQuery, setSearchQuery] = useState("");
  const [selectedRows, setSelectedRows] = useState<string[]>([]);
  const [pageSize, setPageSize] = useState("10");

  // Modal State
  const [isModalOpen, setIsModalOpen] = useState(false);
  const [viewingRoom, setViewingRoom] = useState<ClassroomRecord | null>(null);
  const [editingId, setEditingId] = useState<string | null>(null);

  const [formData, setFormData] = useState({
    roomNumber: "",
    blockWing: "North Wing - Level 1",
    roomType: "Smart Lecture Hall",
    capacity: 60,
    avSetup: "Interactive Touch Display & Wireless Mic",
    status: "Available" as "Available" | "Occupied" | "Reserved",
  });

  const filteredClassrooms = classrooms.filter((r) => {
    const matchesWing = selectedWing === "All Wings" || r.blockWing.includes(selectedWing);
    const matchesType = selectedType === "All Types" || r.roomType === selectedType;
    const matchesStatus = selectedStatus === "All Status" || r.status === selectedStatus;
    const matchesSearch =
      searchQuery === "" ||
      r.roomNumber.toLowerCase().includes(searchQuery.toLowerCase()) ||
      r.blockWing.toLowerCase().includes(searchQuery.toLowerCase()) ||
      r.roomType.toLowerCase().includes(searchQuery.toLowerCase()) ||
      r.avSetup.toLowerCase().includes(searchQuery.toLowerCase());
    return matchesWing && matchesType && matchesStatus && matchesSearch;
  });

  const handleSelectAll = (e: React.ChangeEvent<HTMLInputElement>) => {
    if (e.target.checked) {
      setSelectedRows(filteredClassrooms.map((r) => r.id));
    } else {
      setSelectedRows([]);
    }
  };

  const handleRowSelect = (id: string) => {
    setSelectedRows((prev) =>
      prev.includes(id) ? prev.filter((r) => r !== id) : [...prev, id]
    );
  };

  const handleResetFilters = () => {
    setSelectedWing("All Wings");
    setSelectedType("All Types");
    setSelectedStatus("All Status");
    setSearchQuery("");
    toast.info("Filters reset to default");
  };

  const handleOpenAdd = () => {
    setEditingId(null);
    setFormData({
      roomNumber: "",
      blockWing: "North Wing - Level 1",
      roomType: "Smart Lecture Hall",
      capacity: 60,
      avSetup: "Interactive Touch Display & Wireless Mic",
      status: "Available",
    });
    setIsModalOpen(true);
  };

  const handleEdit = (r: ClassroomRecord) => {
    setEditingId(r.id);
    setFormData({
      roomNumber: r.roomNumber,
      blockWing: r.blockWing,
      roomType: r.roomType,
      capacity: r.capacity,
      avSetup: r.avSetup,
      status: r.status,
    });
    setIsModalOpen(true);
  };

  const handleDelete = (id: string) => {
    setClassrooms((prev) => prev.filter((r) => r.id !== id));
    toast.success("Classroom record removed");
  };

  const handleSubmitForm = (e: React.FormEvent) => {
    e.preventDefault();
    if (!formData.roomNumber.trim()) {
      toast.error("Please enter Room Number");
      return;
    }

    if (editingId) {
      setClassrooms((prev) =>
        prev.map((r) =>
          r.id === editingId
            ? {
                ...r,
                roomNumber: formData.roomNumber,
                blockWing: formData.blockWing,
                roomType: formData.roomType,
                capacity: Number(formData.capacity),
                avSetup: formData.avSetup,
                status: formData.status,
              }
            : r
        )
      );
      toast.success("Classroom allocation updated");
    } else {
      const newRoom: ClassroomRecord = {
        id: `cls-${Date.now()}`,
        roomNumber: formData.roomNumber,
        blockWing: formData.blockWing,
        roomType: formData.roomType,
        capacity: Number(formData.capacity),
        avSetup: formData.avSetup,
        status: formData.status,
      };
      setClassrooms((prev) => [newRoom, ...prev]);
      toast.success("New classroom allocated");
    }
    setIsModalOpen(false);
  };

  const getStatusBadge = (status: "Available" | "Occupied" | "Reserved") => {
    switch (status) {
      case "Available":
        return "bg-[#DCFCE7] text-[#15803D] border-[#BBF7D0]";
      case "Occupied":
        return "bg-[#FEE2E2] text-[#DC2626] border-[#FECACA]";
      case "Reserved":
        return "bg-[#FEF3C7] text-[#B45309] border-[#FDE68A]";
    }
  };

  return (
    <div className="space-y-6 pb-12 font-sans bg-[#F8FAFC] min-h-screen">
      {/* 1. Header Bar */}
      <div>
        <div className="flex items-center gap-2 text-xs text-[#64748B] mb-2 font-medium">
          <Link href="/admin/dashboard" className="hover:text-[#1769E8] transition-colors">
            Home
          </Link>
          <span>&gt;</span>
          <Link href="/admin/timetable" className="hover:text-[#1769E8] transition-colors">
            Timetable Management
          </Link>
          <span>&gt;</span>
          <span className="text-[#071A4D] font-semibold">Classroom Allocation</span>
        </div>

        <div className="flex flex-col md:flex-row md:items-center justify-between gap-4">
          <div>
            <h1 className="text-3xl font-bold font-heading text-[#071A4D] tracking-tight">
              Classroom Allocation
            </h1>
            <p className="text-[15px] text-[#64748B] mt-1 font-normal">
              Lecture hall assignments, seating capacities, and multimedia configurations across campus wings.
            </p>
          </div>

          <div className="flex items-center gap-3">
            <button
              onClick={() => toast.success("Exporting classrooms to Excel...")}
              className="px-4 py-2 bg-white border border-[#E2E8F0] rounded-lg text-sm font-medium text-[#334155] hover:bg-slate-50 transition-colors flex items-center gap-2 shadow-xs cursor-pointer"
            >
              <FileSpreadsheet className="w-4 h-4 text-emerald-600" />
              <span>Export</span>
            </button>
            <button
              onClick={() => toast.info("Generating facility report...")}
              className="px-4 py-2 bg-white border border-[#E2E8F0] rounded-lg text-sm font-medium text-[#334155] hover:bg-slate-50 transition-colors flex items-center gap-2 shadow-xs cursor-pointer"
            >
              <FileText className="w-4 h-4 text-purple-600" />
              <span>Generate Report</span>
            </button>
            <button
              onClick={handleOpenAdd}
              className="px-5 py-2.5 bg-[#1769E8] hover:bg-[#1255be] text-white rounded-lg text-sm font-semibold transition-colors flex items-center gap-2 shadow-sm cursor-pointer"
            >
              <Plus className="w-4 h-4" />
              <span>+ Allocate Classroom</span>
            </button>
          </div>
        </div>
      </div>

      {/* 2. Filter Bar */}
      <div className="bg-white rounded-xl border border-[#E5EAF0] shadow-xs p-4">
        <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-12 gap-3.5 items-end">
          <div className="lg:col-span-3">
            <label className="block text-[11px] font-semibold text-[#64748B] uppercase tracking-wider mb-1.5">
              Campus Wing
            </label>
            <select
              value={selectedWing}
              onChange={(e) => setSelectedWing(e.target.value)}
              className="w-full bg-white border border-[#E2E8F0] text-sm text-[#0F172A] rounded-lg px-3 py-2 font-medium focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all cursor-pointer"
            >
              <option>All Wings</option>
              <option>North Wing</option>
              <option>Main Academic Block</option>
              <option>East Wing</option>
              <option>West Wing</option>
              <option>Administrative Block</option>
            </select>
          </div>

          <div className="lg:col-span-3">
            <label className="block text-[11px] font-semibold text-[#64748B] uppercase tracking-wider mb-1.5">
              Room Type
            </label>
            <select
              value={selectedType}
              onChange={(e) => setSelectedType(e.target.value)}
              className="w-full bg-white border border-[#E2E8F0] text-sm text-[#0F172A] rounded-lg px-3 py-2 font-medium focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all cursor-pointer"
            >
              <option>All Types</option>
              <option>Smart Lecture Hall</option>
              <option>Lecture Hall</option>
              <option>Tiered Amphitheatre</option>
              <option>Seminar Classroom</option>
              <option>Executive Boardroom</option>
            </select>
          </div>

          <div className="lg:col-span-2">
            <label className="block text-[11px] font-semibold text-[#64748B] uppercase tracking-wider mb-1.5">
              Status
            </label>
            <select
              value={selectedStatus}
              onChange={(e) => setSelectedStatus(e.target.value)}
              className="w-full bg-white border border-[#E2E8F0] text-sm text-[#0F172A] rounded-lg px-3 py-2 font-medium focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all cursor-pointer"
            >
              <option>All Status</option>
              <option>Available</option>
              <option>Occupied</option>
              <option>Reserved</option>
            </select>
          </div>

          <div className="lg:col-span-2">
            <label className="block text-[11px] font-semibold text-[#64748B] uppercase tracking-wider mb-1.5">
              Search
            </label>
            <div className="relative">
              <Search className="w-4 h-4 absolute left-3 top-1/2 -translate-y-1/2 text-[#94A3B8]" />
              <input
                type="text"
                value={searchQuery}
                onChange={(e) => setSearchQuery(e.target.value)}
                placeholder="Search room..."
                className="w-full pl-9 pr-3 py-2 bg-white border border-[#E2E8F0] text-sm text-[#0F172A] placeholder:text-[#94A3B8] rounded-lg focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all"
              />
            </div>
          </div>

          <div className="lg:col-span-2 flex items-center gap-2">
            <button
              onClick={() => toast.success(`Found ${filteredClassrooms.length} rooms`)}
              className="flex-1 bg-[#1769E8] hover:bg-[#1255be] text-white py-2 rounded-lg text-sm font-semibold transition-colors flex items-center justify-center gap-1.5 shadow-xs cursor-pointer"
            >
              <Search className="w-4 h-4" />
              <span>Search</span>
            </button>
            <button
              onClick={handleResetFilters}
              className="border border-[#E2E8F0] hover:bg-slate-50 text-[#64748B] p-2 rounded-lg text-sm font-medium transition-colors flex items-center justify-center cursor-pointer"
              title="Reset Filters"
            >
              <RotateCcw className="w-4 h-4" />
            </button>
          </div>
        </div>
      </div>

      {/* 3. Full-Width Table Card */}
      <div className="bg-white rounded-xl border border-[#E5EAF0] shadow-xs overflow-hidden">
        <div className="p-4 border-b border-[#E5EAF0] flex items-center justify-between">
          <div className="flex items-center gap-2.5">
            <Building2 className="w-5 h-5 text-[#1769E8]" />
            <h2 className="font-heading font-bold text-lg text-[#071A4D]">
              Classroom Roster ({filteredClassrooms.length})
            </h2>
          </div>
          <div className="flex items-center gap-2">
            <select
              value={pageSize}
              onChange={(e) => setPageSize(e.target.value)}
              className="text-xs bg-white border border-[#E2E8F0] rounded-lg px-2.5 py-1.5 font-medium text-[#475569] outline-none cursor-pointer"
            >
              <option value="10">10 per page</option>
              <option value="25">25 per page</option>
            </select>
          </div>
        </div>

        <div className="overflow-x-auto">
          <table className="w-full text-left text-xs border-collapse">
            <thead>
              <tr className="bg-[#F8FAFC] border-b border-[#E5EAF0] text-[#64748B] font-semibold">
                <th className="py-3 px-3.5 w-10 text-center">
                  <input
                    type="checkbox"
                    checked={
                      selectedRows.length === filteredClassrooms.length &&
                      filteredClassrooms.length > 0
                    }
                    onChange={handleSelectAll}
                    className="rounded border-[#CBD5E1] text-[#1769E8] focus:ring-0 cursor-pointer"
                  />
                </th>
                <th className="py-3 px-2 w-8 text-center text-[#64748B]">#</th>
                <th className="py-3 px-3.5 font-bold text-[#071A4D]">Room Number</th>
                <th className="py-3 px-3.5 font-bold text-[#071A4D]">Campus Wing / Level</th>
                <th className="py-3 px-3.5 font-bold text-[#071A4D]">Room Type</th>
                <th className="py-3 px-3.5 font-bold text-[#071A4D] text-center">Capacity</th>
                <th className="py-3 px-3.5 font-bold text-[#071A4D]">Audio / Visual Setup</th>
                <th className="py-3 px-3.5 font-bold text-[#071A4D] text-center">Status</th>
                <th className="py-3 px-4 font-bold text-[#071A4D] text-right">Actions</th>
              </tr>
            </thead>
            <tbody className="divide-y divide-[#E5EAF0]">
              {filteredClassrooms.length === 0 ? (
                <tr>
                  <td colSpan={9} className="py-12 text-center text-slate-400">
                    No classroom allocations match your search criteria.
                  </td>
                </tr>
              ) : (
                filteredClassrooms.map((r, idx) => (
                  <tr
                    key={r.id}
                    className={`hover:bg-[#F8FAFC] transition-colors ${
                      selectedRows.includes(r.id) ? "bg-[#EFF6FF]/40" : ""
                    }`}
                  >
                    <td className="py-3.5 px-3.5 text-center">
                      <input
                        type="checkbox"
                        checked={selectedRows.includes(r.id)}
                        onChange={() => handleRowSelect(r.id)}
                        className="rounded border-[#CBD5E1] text-[#1769E8] focus:ring-0 cursor-pointer"
                      />
                    </td>
                    <td className="py-3.5 px-2 text-center text-[#94A3B8] font-medium">
                      {idx + 1}
                    </td>
                    <td className="py-3.5 px-3.5">
                      <div className="font-bold text-[#071A4D] text-sm flex items-center gap-1.5">
                        <MapPin className="w-3.5 h-3.5 text-[#1769E8]" />
                        <span>{r.roomNumber}</span>
                      </div>
                    </td>
                    <td className="py-3.5 px-3.5 text-[#334155] font-medium">
                      {r.blockWing}
                    </td>
                    <td className="py-3.5 px-3.5 text-[#475569]">
                      {r.roomType}
                    </td>
                    <td className="py-3.5 px-3.5 text-center font-mono font-bold text-[#071A4D]">
                      {r.capacity} Seats
                    </td>
                    <td className="py-3.5 px-3.5 text-[#64748B]">
                      <div className="flex items-center gap-1.5">
                        <Tv className="w-3 h-3 text-[#94A3B8]" />
                        <span className="truncate max-w-xs">{r.avSetup}</span>
                      </div>
                    </td>
                    <td className="py-3.5 px-3.5 text-center">
                      <span
                        className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-[11px] font-bold border ${getStatusBadge(
                          r.status
                        )}`}
                      >
                        {r.status}
                      </span>
                    </td>
                    <td className="py-3.5 px-4 text-right">
                      <div className="flex items-center justify-end gap-1.5">
                        <button
                          onClick={() => setViewingRoom(r)}
                          className="p-1.5 text-[#64748B] hover:text-[#1769E8] hover:bg-[#EFF6FF] rounded-md transition-colors cursor-pointer"
                          title="View Room"
                        >
                          <Eye className="w-3.5 h-3.5" />
                        </button>
                        <button
                          onClick={() => handleEdit(r)}
                          className="p-1.5 text-[#64748B] hover:text-[#1769E8] hover:bg-[#EFF6FF] rounded-md transition-colors cursor-pointer"
                          title="Edit Room"
                        >
                          <Edit2 className="w-3.5 h-3.5" />
                        </button>
                        <button
                          onClick={() => handleDelete(r.id)}
                          className="p-1.5 text-[#64748B] hover:text-rose-600 hover:bg-rose-50 rounded-md transition-colors cursor-pointer"
                          title="Delete Room"
                        >
                          <Trash2 className="w-3.5 h-3.5" />
                        </button>
                      </div>
                    </td>
                  </tr>
                ))
              )}
            </tbody>
          </table>
        </div>

        <div className="p-4 border-t border-[#E5EAF0] flex flex-col sm:flex-row items-center justify-between gap-3 text-xs text-[#64748B]">
          <div>
            Showing 1 to {filteredClassrooms.length} of {classrooms.length} classrooms
          </div>
          <div className="flex items-center gap-1">
            <button className="p-1.5 border border-[#E2E8F0] rounded-md hover:bg-slate-50 transition-colors cursor-pointer">
              <ChevronLeft className="w-3.5 h-3.5" />
            </button>
            <button className="px-3 py-1 bg-[#1769E8] text-white font-bold rounded-md text-xs">
              1
            </button>
            <button className="p-1.5 border border-[#E2E8F0] rounded-md hover:bg-slate-50 transition-colors cursor-pointer">
              <ChevronRight className="w-3.5 h-3.5" />
            </button>
          </div>
        </div>
      </div>

      {/* 4. MODAL: + Allocate / Edit Classroom */}
      {isModalOpen && (
        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50 backdrop-blur-xs p-4 animate-in fade-in duration-150">
          <div className="bg-white rounded-2xl border border-[#E5EAF0] shadow-xl max-w-lg w-full overflow-hidden">
            <div className="p-4 border-b border-[#E5EAF0] flex items-center justify-between bg-[#F8FAFC]">
              <div className="flex items-center gap-2">
                <Building2 className="w-5 h-5 text-[#1769E8]" />
                <h3 className="font-heading font-bold text-base text-[#071A4D]">
                  {editingId ? "Edit Classroom" : "Allocate New Classroom"}
                </h3>
              </div>
              <button
                onClick={() => setIsModalOpen(false)}
                className="p-1 text-[#64748B] hover:text-[#071A4D] rounded-md transition-colors cursor-pointer"
              >
                <X className="w-5 h-5" />
              </button>
            </div>

            <form onSubmit={handleSubmitForm} className="p-5 space-y-4 text-xs">
              <div className="grid grid-cols-2 gap-3">
                <div>
                  <label className="block font-semibold text-[#334155] mb-1">
                    Room Number / Name <span className="text-rose-500">*</span>
                  </label>
                  <input
                    type="text"
                    required
                    value={formData.roomNumber}
                    onChange={(e) => setFormData({ ...formData, roomNumber: e.target.value })}
                    placeholder="e.g. Room 104"
                    className="w-full px-3 py-2 border border-[#E2E8F0] rounded-lg text-sm text-[#0F172A] placeholder:text-[#94A3B8] focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all"
                  />
                </div>

                <div>
                  <label className="block font-semibold text-[#334155] mb-1">
                    Campus Wing / Level
                  </label>
                  <select
                    value={formData.blockWing}
                    onChange={(e) => setFormData({ ...formData, blockWing: e.target.value })}
                    className="w-full px-3 py-2 border border-[#E2E8F0] rounded-lg text-sm text-[#0F172A] focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all bg-white cursor-pointer"
                  >
                    <option>North Wing - Level 1</option>
                    <option>Main Academic Block</option>
                    <option>East Wing - Level 2</option>
                    <option>West Wing - Level 2</option>
                    <option>Administrative Block</option>
                  </select>
                </div>
              </div>

              <div className="grid grid-cols-2 gap-3">
                <div>
                  <label className="block font-semibold text-[#334155] mb-1">
                    Room Type
                  </label>
                  <select
                    value={formData.roomType}
                    onChange={(e) => setFormData({ ...formData, roomType: e.target.value })}
                    className="w-full px-3 py-2 border border-[#E2E8F0] rounded-lg text-sm text-[#0F172A] focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all bg-white cursor-pointer"
                  >
                    <option>Smart Lecture Hall</option>
                    <option>Lecture Hall</option>
                    <option>Tiered Amphitheatre</option>
                    <option>Seminar Classroom</option>
                    <option>Executive Boardroom</option>
                  </select>
                </div>

                <div>
                  <label className="block font-semibold text-[#334155] mb-1">
                    Seating Capacity
                  </label>
                  <input
                    type="number"
                    min="10"
                    max="300"
                    value={formData.capacity}
                    onChange={(e) => setFormData({ ...formData, capacity: parseInt(e.target.value) || 0 })}
                    className="w-full px-3 py-2 border border-[#E2E8F0] rounded-lg text-sm text-[#0F172A] font-mono focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all"
                  />
                </div>
              </div>

              <div>
                <label className="block font-semibold text-[#334155] mb-1">
                  Audio / Visual Equipment Setup
                </label>
                <input
                  type="text"
                  value={formData.avSetup}
                  onChange={(e) => setFormData({ ...formData, avSetup: e.target.value })}
                  placeholder="e.g. Interactive Smartboard & Ceiling Mic Array"
                  className="w-full px-3 py-2 border border-[#E2E8F0] rounded-lg text-sm text-[#0F172A] placeholder:text-[#94A3B8] focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all"
                />
              </div>

              <div>
                <label className="block font-semibold text-[#334155] mb-1">
                  Allocation Status
                </label>
                <select
                  value={formData.status}
                  onChange={(e) =>
                    setFormData({
                      ...formData,
                      status: e.target.value as "Available" | "Occupied" | "Reserved",
                    })
                  }
                  className="w-full px-3 py-2 border border-[#E2E8F0] rounded-lg text-sm text-[#0F172A] focus:ring-2 focus:ring-[#1769E8]/20 focus:border-[#1769E8] outline-none transition-all bg-white cursor-pointer"
                >
                  <option value="Available">Available for Booking</option>
                  <option value="Occupied">Currently Occupied</option>
                  <option value="Reserved">Reserved / Maintenance</option>
                </select>
              </div>

              <div className="flex items-center gap-2 pt-3 border-t border-[#E5EAF0]">
                <button
                  type="button"
                  onClick={() => setIsModalOpen(false)}
                  className="flex-1 py-2 px-3 border border-[#E2E8F0] text-[#64748B] hover:bg-slate-50 rounded-lg text-xs font-semibold transition-colors cursor-pointer"
                >
                  Cancel
                </button>
                <button
                  type="submit"
                  className="flex-1 py-2 px-3 bg-[#1769E8] hover:bg-[#1255be] text-white rounded-lg text-xs font-semibold transition-colors flex items-center justify-center gap-1.5 shadow-xs cursor-pointer"
                >
                  <CheckCircle2 className="w-3.5 h-3.5" />
                  <span>{editingId ? "Update Classroom" : "Save Classroom"}</span>
                </button>
              </div>
            </form>
          </div>
        </div>
      )}

      {/* 5. MODAL: View Classroom Details */}
      {viewingRoom && (
        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50 backdrop-blur-xs p-4 animate-in fade-in duration-150">
          <div className="bg-white rounded-2xl border border-[#E5EAF0] shadow-xl max-w-md w-full overflow-hidden">
            <div className="p-4 border-b border-[#E5EAF0] flex items-center justify-between bg-[#F8FAFC]">
              <div className="flex items-center gap-2">
                <Building2 className="w-5 h-5 text-[#1769E8]" />
                <h3 className="font-heading font-bold text-base text-[#071A4D]">
                  Classroom Specification
                </h3>
              </div>
              <button
                onClick={() => setViewingRoom(null)}
                className="p-1 text-[#64748B] hover:text-[#071A4D] rounded-md transition-colors cursor-pointer"
              >
                <X className="w-5 h-5" />
              </button>
            </div>

            <div className="p-5 space-y-4 text-xs">
              <div className="flex items-center justify-between pb-3 border-b border-[#E5EAF0]">
                <div>
                  <h4 className="font-heading font-bold text-lg text-[#071A4D]">
                    {viewingRoom.roomNumber}
                  </h4>
                  <p className="text-[11px] text-[#64748B]">{viewingRoom.blockWing}</p>
                </div>
                <span
                  className={`px-2.5 py-1 rounded-full text-xs font-bold border ${getStatusBadge(
                    viewingRoom.status
                  )}`}
                >
                  {viewingRoom.status}
                </span>
              </div>

              <div className="space-y-2.5">
                <div className="flex items-center justify-between p-2.5 bg-[#F8FAFC] rounded-lg border border-[#E5EAF0]">
                  <span className="font-medium text-[#64748B]">Type</span>
                  <span className="font-bold text-[#071A4D]">{viewingRoom.roomType}</span>
                </div>
                <div className="flex items-center justify-between p-2.5 bg-[#F8FAFC] rounded-lg border border-[#E5EAF0]">
                  <span className="font-medium text-[#64748B]">Seating Capacity</span>
                  <span className="font-mono font-bold text-[#1769E8]">{viewingRoom.capacity} Students</span>
                </div>
                <div className="p-2.5 bg-[#F8FAFC] rounded-lg border border-[#E5EAF0]">
                  <span className="font-medium text-[#64748B] block mb-1">AV / Equipment Setup</span>
                  <span className="font-semibold text-[#071A4D]">{viewingRoom.avSetup}</span>
                </div>
              </div>

              <div className="flex items-center justify-end gap-2 pt-3 border-t border-[#E5EAF0]">
                <button
                  type="button"
                  onClick={() => {
                    const toEdit = viewingRoom;
                    setViewingRoom(null);
                    handleEdit(toEdit);
                  }}
                  className="py-2 px-3 border border-[#E2E8F0] hover:bg-slate-50 text-[#334155] rounded-lg text-xs font-semibold transition-colors cursor-pointer"
                >
                  Edit Allocation
                </button>
                <button
                  type="button"
                  onClick={() => setViewingRoom(null)}
                  className="py-2 px-4 bg-[#1769E8] hover:bg-[#1255be] text-white rounded-lg text-xs font-semibold transition-colors cursor-pointer"
                >
                  Close
                </button>
              </div>
            </div>
          </div>
        </div>
      )}
    </div>
  );
}