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

        :root {
            /* Cores para modo claro */
            --light-primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --light-secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --light-card-gradient: linear-gradient(145deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
            --light-glass-backdrop: rgba(255, 255, 255, 0.1);
            --light-text-primary: #ffffff;
            --light-text-secondary: rgba(255, 255, 255, 0.8);
            --light-shadow-primary: 0 20px 40px rgba(0,0,0,0.2);
            --light-shadow-secondary: 0 10px 25px rgba(0,0,0,0.15);
            
            /* Cores para modo escuro */
            --dark-primary-gradient: linear-gradient(135deg, #1a2a6c 0%, #2a0845 100%);
            --dark-secondary-gradient: linear-gradient(135deg, #8E2DE2 0%, #4A00E0 100%);
            --dark-card-gradient: linear-gradient(145deg, rgba(0,0,0,0.2), rgba(0,0,0,0.15));
            --dark-glass-backdrop: rgba(0, 0, 0, 0.15);
            --dark-text-primary: #f0f0f0;
            --dark-text-secondary: rgba(240, 240, 240, 0.7);
            --dark-shadow-primary: 0 20px 40px rgba(0,0,0,0.4);
            --dark-shadow-secondary: 0 10px 25px rgba(0,0,0,0.3);
            
            /* Variáveis ativas (inicialmente modo claro) */
            --primary-gradient: var(--light-primary-gradient);
            --secondary-gradient: var(--light-secondary-gradient);
            --card-gradient: var(--light-card-gradient);
            --glass-backdrop: var(--light-glass-backdrop);
            --text-primary: var(--light-text-primary);
            --text-secondary: var(--light-text-secondary);
            --shadow-primary: var(--light-shadow-primary);
            --shadow-secondary: var(--light-shadow-secondary);
        }

        body.dark-mode {
            --primary-gradient: var(--dark-primary-gradient);
            --secondary-gradient: var(--dark-secondary-gradient);
            --card-gradient: var(--dark-card-gradient);
            --glass-backdrop: var(--dark-glass-backdrop);
            --text-primary: var(--dark-text-primary);
            --text-secondary: var(--dark-text-secondary);
            --shadow-primary: var(--dark-shadow-primary);
            --shadow-secondary: var(--dark-shadow-secondary);
        }

        /* Estilo para o botão de toggle */
        .theme-toggle {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            background: var(--glass-backdrop);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 50%;
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-secondary);
            transition: all 0.3s ease;
            z-index: 10;
        }

        .theme-toggle:hover {
            transform: scale(1.1) rotate(30deg);
            background: rgba(255,255,255,0.2);
            box-shadow: 0 0 20px rgba(255,255,255,0.2);
        }

        /* Ajuste no cabeçalho para acomodar o botão */
        .header {
            position: relative;
            padding-bottom: 2rem;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--primary-gradient);
            background-attachment: fixed;
            min-height: 100vh;
            color: var(--text-primary);
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
            animation: backgroundPulse 20s ease-in-out infinite alternate;
            z-index: -1;
            opacity: 0.7;
        }

        body.dark-mode::before {
            background: 
                radial-gradient(circle at 20% 80%, rgba(30, 30, 70, 0.5) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(70, 20, 80, 0.5) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(20, 50, 100, 0.4) 0%, transparent 50%);
            opacity: 0.9;
        }

        @keyframes backgroundPulse {
            0% { opacity: 0.7; transform: scale(1); }
            100% { opacity: 1; transform: scale(1.1); }
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
            padding: 2rem;
            position: relative;
            z-index: 1;
        }

        .header {
            text-align: center;
            margin-bottom: 3rem;
            opacity: 0;
            animation: slideInFromTop 1s ease-out 0.5s forwards;
        }

        .header h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            position: relative;
        }

        .header h1 .title-text {
            background: linear-gradient(45deg, #fff, #f0f0f0, #fff);
            background-size: 200% 200%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: shimmer 3s ease-in-out infinite;
            text-shadow: 0 0 30px rgba(255,255,255,0.5);
        }

        .header p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            font-weight: 300;
        }

        @keyframes shimmer {
            0%, 100% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
        }

        @keyframes slideInFromTop {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .api-info {
            background: var(--card-gradient);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 15px;
            padding: 1rem 1.5rem;
            margin-bottom: 2rem;
            text-align: center;
            box-shadow: var(--shadow-secondary);
            opacity: 0;
            animation: slideInFromLeft 1s ease-out 0.7s forwards;
            position: relative;
            overflow: hidden;
        }

        .api-info::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
            transition: left 0.8s ease;
        }

        .api-info:hover::before {
            left: 100%;
        }

        @keyframes slideInFromLeft {
            from {
                opacity: 0;
                transform: translateX(-50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .search-section {
            margin-bottom: 2rem;
            opacity: 0;
            animation: slideInFromRight 1s ease-out 0.9s forwards;
        }

        .search-container {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }

        .search-input {
            flex: 1;
            min-width: 250px;
            padding: 1.2rem 1.5rem;
            font-size: 1.1rem;
            border: none;
            border-radius: 25px;
            background: var(--glass-backdrop);
            backdrop-filter: blur(10px);
            color: var(--text-primary);
            outline: none;
            border: 2px solid transparent;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: var(--shadow-secondary);
        }

        .search-input::placeholder {
            color: rgba(255,255,255,0.6);
        }

        .search-input:focus {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.3);
            border: 2px solid rgba(255,255,255,0.3);
            background: rgba(255,255,255,0.15);
        }

        @keyframes slideInFromRight {
            from {
                opacity: 0;
                transform: translateX(50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .btn {
            padding: 1.2rem 2rem;
            border: none;
            border-radius: 25px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-secondary);
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255,255,255,0.2);
            transition: all 0.6s ease;
            transform: translate(-50%, -50%);
        }

        .btn:hover::before {
            width: 300px;
            height: 300px;
        }

        .btn:hover {
            transform: translateY(-3px) scale(1.05);
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .btn:active {
            transform: translateY(-1px) scale(1.02);
        }

        .btn-primary {
            background: var(--secondary-gradient);
            color: white;
        }

        .btn-secondary {
            background: rgba(255,255,255,0.1);
            color: var(--text-primary);
            border: 1px solid rgba(255,255,255,0.2);
        }

        .loading {
            text-align: center;
            padding: 3rem;
            opacity: 0;
            transform: scale(0.8);
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .loading:not(.hidden) {
            opacity: 1;
            transform: scale(1);
        }

        .spinner {
            width: 60px;
            height: 60px;
            border: 4px solid rgba(255,255,255,0.1);
            border-top: 4px solid var(--text-primary);
            border-radius: 50%;
            margin: 0 auto 1rem;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .error {
            background: linear-gradient(135deg, rgba(255,99,99,0.2), rgba(255,71,87,0.2));
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,99,99,0.3);
            border-radius: 15px;
            padding: 1.5rem;
            text-align: center;
            margin-bottom: 2rem;
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .error:not(.hidden) {
            opacity: 1;
            transform: translateY(0);
        }

        .weather-card {
            background: var(--card-gradient);
            backdrop-filter: blur(25px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 25px;
            padding: 2.5rem;
            box-shadow: var(--shadow-primary);
            opacity: 0;
            transform: translateY(50px) scale(0.9);
            transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .weather-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: conic-gradient(
                from 0deg,
                transparent,
                rgba(255,255,255,0.05),
                transparent,
                rgba(255,255,255,0.05),
                transparent
            );
            animation: rotate 20s linear infinite;
            z-index: -1;
        }

        @keyframes rotate {
            100% { transform: rotate(360deg); }
        }

        .weather-card:not(.hidden) {
            opacity: 1;
            transform: translateY(0) scale(1);
        }

        .weather-card:hover {
            transform: translateY(-5px) scale(1.02);
            box-shadow: 0 30px 60px rgba(0,0,0,0.3);
        }

        .weather-main {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .weather-info h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            background: linear-gradient(45deg, #fff, #f0f0f0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .location {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
        }

        .description {
            font-size: 1.3rem;
            color: var(--text-primary);
            font-weight: 500;
            text-transform: capitalize;
        }

        .temperature {
            text-align: right;
        }

        .temp-main {
            font-size: 4rem;
            font-weight: 300;
            line-height: 1;
            background: linear-gradient(45deg, #fff, #e0e0e0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: pulse 2s ease-in-out infinite alternate;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            100% { transform: scale(1.05); }
        }

        .feels-like {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-top: 0.5rem;
        }

        .weather-details {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .detail-item {
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 15px;
            padding: 1.5rem;
            text-align: center;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .detail-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
            transition: left 0.6s ease;
        }

        .detail-item:hover {
            transform: translateY(-5px) scale(1.05);
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.3);
            box-shadow: 0 15px 30px rgba(0,0,0,0.2);
        }

        .detail-item:hover::before {
            left: 100%;
        }

        .detail-icon {
            font-size: 2rem;
            margin-bottom: 0.8rem;
            animation: bounce 2s ease-in-out infinite;
            filter: none;
            color: initial;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
            40% { transform: translateY(-10px); }
            60% { transform: translateY(-5px); }
        }

        .detail-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
            font-weight: 500;
        }

        .detail-value {
            font-size: 1.3rem;
            color: var(--text-primary);
            font-weight: 600;
        }

        .hidden {
            display: none;
        }

        /* Animações de entrada escalonadas para os itens de detalhes */
        .detail-item:nth-child(1) { animation-delay: 0.1s; }
        .detail-item:nth-child(2) { animation-delay: 0.2s; }
        .detail-item:nth-child(3) { animation-delay: 0.3s; }
        .detail-item:nth-child(4) { animation-delay: 0.4s; }

        /* Responsividade */
        @media (max-width: 768px) {
            .container {
                padding: 1rem;
            }

            .header h1 {
                font-size: 2.5rem;
            }

            .search-container {
                flex-direction: column;
            }

            .search-input {
                min-width: 100%;
            }

            .weather-main {
                text-align: center;
                flex-direction: column;
            }

            .temperature {
                text-align: center;
            }

            .temp-main {
                font-size: 3rem;
            }

            .weather-details {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }

        @media (max-width: 480px) {
            .header h1 {
                font-size: 2rem;
            }

            .weather-details {
                grid-template-columns: 1fr;
            }
        }

        /* Efeitos especiais para elementos interativos */
        @keyframes glow {
            0%, 100% { box-shadow: 0 0 20px rgba(255,255,255,0.2); }
            50% { box-shadow: 0 0 30px rgba(255,255,255,0.4); }
        }

        .search-input:focus,
        .btn:hover,
        .weather-card:hover {
            animation: glow 2s ease-in-out infinite;
        }

        /* Transições suaves para mudança de estados */
        * {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .weather-card {
            transition: transform 0.3s ease-in-out;
        }