<?php
session_start();
?>

<!DOCTYPE html>
<html lang="ru">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>SolarManager - Управление солнечными панелями</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: radial-gradient(circle at 10% 20%, #f9d423 0%, #f4a460 50%, #ff8c00 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
            position: relative;
        }

        /* Солнечные лучи */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: repeating-linear-gradient(45deg, 
                rgba(255,255,0,0.05) 0px, 
                rgba(255,255,0,0.05) 2px,
                transparent 2px,
                transparent 8px);
            pointer-events: none;
        }

        .login-container {
            background: rgba(20, 30, 20, 0.92);
            backdrop-filter: blur(12px);
            border-radius: 35px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.4), 0 0 0 2px rgba(255,215,0,0.3);
            padding: 40px;
            max-width: 500px;
            width: 100%;
            border: 1px solid rgba(255,215,0,0.5);
        }

        h1 {
            text-align: center;
            color: #ffd700;
            font-size: 28px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            text-shadow: 0 0 20px rgba(255,215,0,0.5);
        }

        .solar-badge {
            background: #1a2a1a;
            padding: 8px 15px;
            border-radius: 40px;
            color: #ffd700;
            font-size: 14px;
            display: inline-block;
            margin-bottom: 20px;
            text-align: center;
            letter-spacing: 1px;
            width: 100%;
            border: 1px solid #ffd700;
        }

        .energy-stats {
            display: flex;
            justify-content: space-between;
            background: #0d1a0d;
            padding: 12px 20px;
            border-radius: 25px;
            margin-bottom: 20px;
            text-align: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .energy-stat {
            flex: 1;
        }

        .energy-stat .value {
            font-size: 22px;
            font-weight: bold;
            color: #ffd700;
        }

        .energy-stat .label {
            font-size: 11px;
            color: #8bc34a;
        }

        .device-icons {
            display: flex;
            justify-content: space-around;
            margin: 20px 0;
            background: #0d1a0d;
            padding: 15px;
            border-radius: 60px;
            flex-wrap: wrap;
            gap: 10px;
        }

        .device-icons span {
            font-size: 42px;
            transition: all 0.3s;
            filter: drop-shadow(0 0 5px rgba(255,215,0,0.3));
        }

        .device-icons span:hover {
            transform: scale(1.2) rotate(5deg);
            filter: drop-shadow(0 0 15px rgba(255,215,0,0.8));
        }

        .input-group {
            margin-bottom: 25px;
        }

        label {
            display: block;
            font-weight: bold;
            color: #ffd700;
            margin-bottom: 8px;
            font-size: 18px;
        }

        input[type="text"],
        input[type="password"] {
            width: 100%;
            padding: 12px 15px;
            font-size: 16px;
            border: 2px solid #3a5a3a;
            border-radius: 25px;
            background: #0d1a0d;
            color: #fff;
            transition: 0.3s;
        }

        input:focus {
            border-color: #ffd700;
            outline: none;
            box-shadow: 0 0 15px rgba(255,215,0,0.3);
        }

        input::placeholder {
            color: #4a6a4a;
        }

        .toggle-group {
            background: #0d1a0d;
            padding: 15px;
            border-radius: 30px;
            margin-bottom: 25px;
            border: 1px solid #3a5a3a;
        }

        .toggle-label {
            display: flex;
            align-items: center;
            gap: 15px;
            font-weight: bold;
            color: #ffd700;
            justify-content: center;
        }

        .toggle-label span {
            font-size: 28px;
        }

        select {
            padding: 8px 20px;
            font-size: 18px;
            border-radius: 40px;
            background: #ffd700;
            color: #1a2a1a;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: 0.3s;
        }

        select:hover {
            background: #ffc107;
            transform: scale(1.02);
        }

        button {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #ffd700, #ff8c00);
            color: #1a2a1a;
            font-size: 20px;
            font-weight: bold;
            border: none;
            border-radius: 40px;
            cursor: pointer;
            transition: 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        button:hover {
            transform: scale(1.02);
            box-shadow: 0 5px 25px rgba(255,215,0,0.5);
        }

        .error-msg {
            background: linear-gradient(135deg, #e74c3c, #c0392b);
            color: white;
            padding: 12px;
            border-radius: 25px;
            text-align: center;
            margin-bottom: 20px;
            font-weight: bold;
            animation: shake 0.5s ease-in-out;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-10px); }
            75% { transform: translateX(10px); }
        }

        .solar-footer {
            margin-top: 25px;
            text-align: center;
            font-size: 12px;
            color: #8bc34a;
        }

        .power-led {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #ffd700;
            animation: pulse 1.5s infinite;
            margin-right: 5px;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; box-shadow: 0 0 5px #ffd700; }
            50% { opacity: 0.4; box-shadow: 0 0 15px #ffd700; }
        }
    </style>
</head>
<body>
    <div class="login-container">
        <h1>
            <span>☀️</span> SolarManager <span>🔋</span>
        </h1>
        <div class="solar-badge">
            ⚡ Система мониторинга солнечной энергии v2.0 ⚡
        </div>

        <div class="energy-stats">
            <div class="energy-stat">
                <div class="value">☀️ 847 W/m²</div>
                <div class="label">Инсоляция</div>
            </div>
            <div class="energy-stat">
                <div class="value">🔋 6.2 kW</div>
                <div class="label">Выработка</div>
            </div>
            <div class="energy-stat">
                <div class="value">💚 94%</div>
                <div class="label">Эффективность</div>
            </div>
        </div>

        <div class="device-icons">
            <span title="Солнечная панель">☀️</span>
            <span title="Инвертор">🔄</span>
            <span title="Аккумулятор">🔋</span>
            <span title="Контроллер">📊</span>
            <span title="Сеть">⚡</span>
            <span title="Счётчик">📟</span>
        </div>

        <?php if (isset($_SESSION['login_error'])): ?>
            <div class="error-msg">
                ❌ <?= htmlspecialchars($_SESSION['login_error']) ?> ❌
            </div>
            <?php unset($_SESSION['login_error']); ?>
        <?php endif; ?>

        <form action="process.php" method="POST">
            <div class="input-group">
                <label>👤 Логин (ID оператора)</label>
                <input type="text" name="username" placeholder="operator@solar.com" value="<?= isset($_SESSION['old_username']) ? htmlspecialchars($_SESSION['old_username']) : '' ?>" required>
                <?php unset($_SESSION['old_username']); ?>
            </div>

            <div class="input-group">
                <label>🔐 Пароль доступа</label>
                <input type="password" name="password" placeholder="••••••••" required>
            </div>

            <div class="toggle-group">
                <div class="toggle-label">
                    <span>🏠</span>
                    <span>Выбери объект:</span>
                    <select name="facility">
                        <option value="home">🏠 ЧАСТНЫЙ ДОМ 🏠</option>
                        <option value="station">🏭 СОЛНЕЧНАЯ СТАНЦИЯ 🏭</option>
                    </select>
                    <span>🏭</span>
                </div>
            </div>

            <button type="submit">
                🔋 Войти в SolarManager 🔋
            </button>
        </form>

        <div class="solar-footer">
            <span class="power-led"></span> Активная мощность: 4.8 kW • CO₂ экономия: 127 кг сегодня
        </div>
    </div>
</body>
</html>